DOCSLIB.ORG

Us 8783232 B2 Ra

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Us 8783232 B2 Ra USOO8783232B2 (12) United States Patent (10) Patent No.: US 8,783,232 B2 Veerathappa et al. (45) Date of Patent: Jul. 22, 2014 (54) STRATIFIED TWO-STROKE ENGINE AND USPC .......... 123/527; 123/65 P; 123/525; 123/540: DUAL PASSAGE FUEL SYSTEM 261/16; 261/41.2: 48/116; 48/61 (58) Field of Classification Search (75) Inventors: Jay S. Veerathappa, Los Angeles, CA USPC .......... 123/65 P. 73 PP, 525,438,463, 196R, (US); Nagesh S. Mavinahally, 123/527; 48/116, 61; 261/16, 41.2, 41.3, Northridge, CA (US) 261/42, 34.1 See application file for complete search history. (73) Assignee: Nagesh S Mavinahally, Granada Hills, (56) References Cited CA (US) U.S. PATENT DOCUMENTS (*) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 2,397.984. A * 4, 1946 Schorn .......................... 123,463 U.S.C. 154(b) by 259 days. 4,253.433 A 3, 1981 Blair 5,918,574 A 7/1999 Kobayashi 6,101,991 A * 8/2000 Glover ...................... 123,73 PP (21) Appl. No.: 13/425,417 6,112,708 A 9/2000 Sawada et al. 6,273,037 B1 8/2001 Cobb, Jr. (22) Filed: Mar 21, 2012 6,293,235 B1 9/2001 Cobb, Jr. 6,640,755 B2 11/2003 Araki (65) Prior Publication Data 6,901,892 B2 6/2005 Mavinahally et al. 2009/0308352 Al 12/2009 Kojima et al. US 2012/O247435 A1 Oct. 4, 2012 2010/0101540 A1 4/2010 Fujinuma et al. 2011/0220074 A1* 9/2011 Veerathappa ................ 123,65 P Related U.S. Application Data FOREIGN PATENT DOCUMENTS (60) Provisional application No. 61/471,182, filed on Apr. JP 63309759 A * 12, 1988 3, 2011, provisional application No. 61/494,417, filed * cited by examiner on Jun. 8, 2011. Primary Examiner — Noah Kamen (51) Int. Cl. Assistant Examiner — Long T Tran FO2B 45/00 (2006.01) (74) Attorney, Agent, or Firm — Geoffrey Gelman F02M 3/08 (2006.01) F02M 2L/04 (2006.01) (57) ABSTRACT FO2M 17/04 (2006.01) Various embodiments include two-stroke stratified engines FO2M 7/22 (2006.01) and dual passage carburetors for use with gaseous fuel. Such (52) U.S. Cl as hydrogen, methane, liquid petroleum gas, pure propane, CPC F02M 21/042 (2013.01); F02M 13/08 and butane. A stratified air-head engine and low pressure fuel (2013.01); F02M 17/04 (2013.01); F02M 7/225 injected engines with fuel only tube is included. (2013.01); Y02T 10/32 (2013.01) 26 Claims, 18 Drawing Sheets (NSany Yn NS % RA.2 U.S. Patent Jul. 22, 2014 Sheet 1 of 18 US 8,783,232 B2 100 F.G. 1 U.S. Patent Jul. 22, 2014 Sheet 2 of 18 US 8,783.232 B2 540 514 515 542 400 513| 2% 62O in E is YsNN SN402 407soon SS 3 S &šNAO6 404 f, NN %2) - 7 408 31532G ES- NSN 340.3% Yi is 403 314/.3 1 3 22222222222222222222221 44 1 4 426 442 \ 415 440 FIG. 2 U.S. Patent Jul. 22, 2014 Sheet 3 of 18 US 8,783.232 B2 V 6 2 80 FIG. 3 U.S. Patent Jul. 22, 2014 Sheet 4 of 18 US 8,783.232 B2 200 2012 808 840 O O 14 904 2016 406 lel - 50 C/ (D 8300 , N. 2113 70 806 21 802 28 FIG. 4 U.S. Patent Jul. 22, 2014 Sheet 5 of 18 US 8,783.232 B2 540 514 515 8400 513| 2% t rts=2s2 %- NN NFEEEE NSN SNsN N S SA02 407 QB SSOSN Š 8300 NS at2N S 404 P 408 ; WN E Ea.nan NANNG -N N H42 Tw 7ZZ 31431 3 22ZZX22x22 N \ , 41441 3 FIG. 5 U.S. Patent Jul. 22, 2014 Sheet 6 of 18 US 8,783.232 B2 2 % NYNYN2N YN2 a % % 2 FIG. 6 U.S. Patent Jul. 22, 2014 Sheet 7 of 18 US 8,783.232 B2 9 OO 9 808 SNN N 79 (423) N No.N 8O1 (401) Z Ø N@ Ør-y ZZYZZYZZZ72 2% N 2 NN Bø ØN 4N area are FIG 7 U.S. Patent Jul. 22, 2014 Sheet 8 of 18 US 8,783.232 B2 U.S. Patent Jul. 22, 2014 Sheet 9 of 18 US 8,783.232 B2 Š3% N2 r N2 || ANSXSNS2 807, S2%& V 7 C405) 4O6 3. s 411 , 2S isS III2515 40 32O409-2 | 2ZY2II; SN-for-EHL)s 2a- 21 S. b 513 / 315 62O 440 342 FIG 9k 807 No. NYX.S 8O1C NSNS 2 831OO 404ko 2k Z72zClay 831OC 831Oko C U.S. Patent Jul. 22, 2014 Sheet 11 of 18 US 8,783.232 B2 94.08 N 4.25 4. 23 2. TY AN 948 Oko 2>z7):2 %2%" 8 994k s 514 93OO 223 Y a 831Ok 411ko A2 2 M s 515 8901- so bz2%1, 2 2540 411.23 S 22Oko a Z t 4O7 W2 22 OC 32O \ 542 409 Écij-AAAAziz 891.O ZY 314 513 527 NSN N 2 2 2 2 NaSS ZYZY 7 S Z/12 72. 2S2% S S 22 1. Z 2. 2a 22 21. 2 722. 7 ZZ3)Ž 2N 2) 2. 32SS Z % 2 2 2.a 2. % pe 2 it. 542 % U.S. Patent Jul. 22, 2014 Sheet 12 of 18 US 8,783.232 B2 2. w 948 Oko NYS SS 122 2422 221. 4ZZZY ZZNZ 2777,777,777,777.27 27777-7772 2% 340 527 U.S. Patent Jul. 22, 2014 Sheet 13 of 18 US 8,783.232 B2 M% 2 22Z2 ( €3 2. 2€ 2 2 N 806 N 18 Y. FIG. 15 U.S. Patent Jul. 22, 2014 Sheet 14 of 18 US 8,783.232 B2 94O9C SSS 411ko 4O7 23SSéS62 al %NSSS2NSSS. 2 \ S. Š 222 NNS % 402-N-Ns 2 NNNHartly N SS 7000 831O-NSS23 55% Y34siz$2%y is515 3400 S-VNYZ23S 2% t NAS 540 315 N , Z Qat g 340 &N- 542 314 at SP-sserN 440 2", 413 set 600 22 Oc 4O70 ŠY-881c NS -1 56 OO 4O7220C SNSSSNS 411ko 948Oko 401. ko 220 402-NRN Zir 4N 76 OO 514 515 i 540 542 SN Z I U.S. Patent Jul. 22, 2014 Sheet 15 of 18 US 8,783.232 B2 831O SeySS 94 22O 407 NeaQo90S, N es N N/94.08 881ko J7OO 4O722Odess SSSS SS ille -948Ob4O1 220 47 402ko 81 biz 8300b 1771-90 4O2 N 4 Z %zzfess 77OO NNS M 2xs NN514 SN SN 515 340ko NuN IIS 540 315 & N 340 S-1N S 542 RNR 314 SNS as a sa as a saa a vasa as a sa as a sa aa vasa alasa waxaasaaaaaa. ZNNN S =E7 313/f/4. 1. 4. NYYYYYYYYYYNYYYYYYYYYYYYYaer. 5 1. 3 440 / 415 413 527 442 FIG 18 U.S. Patent Jul. 22, 2014 Sheet 16 of 18 US 8,783.232 B2 350 2012 808 8400 O (7000) 806 28 FIG. 19 U.S. Patent Jul. 22, 2014 Sheet 17 of 18 US 8,783.232 B2 360 (8300) FIG. 20 U.S. Patent Jul. 22, 2014 Sheet 18 of 18 US 8,783.232 B2 2089 89 Z 72.22% XSNS US 8,783,232 B2 1. 2 STRATIFIED TWO-STROKE ENGINE AND be injected into the transfer passage, particularly at the bot DUAL PASSAGE FUEL SYSTEM tom of the passage in a stratified engine where air is drawn into the crankcase through the transfer passage. The gaseous RELATED APPLICATIONS fuel tank is attached to the bottom of the crankcase or at the top of the engine above the cylinder. The gaseous fuel tank The present application claims the benefit of priority of may also be embedded inside the plastic housing on an U.S. provisional application Nos. 61/313,801, filed Mar. 14, engine, such as a chainsaw. There may be more than one fuel 2010, entitled “STRATIFIED TWO-STROKE ENGINE tank attached to the engine. The generator produced by AND FUEL SYSTEM”, 61/471,182, filed Apr. 3, 2011, Honda model EU9IGB has two LPG or Butane fuel canisters entitled STRATIFIED TWO-STROKE ENGINE and 10 attached to the engine inside a plastic housing. A chainsaw 61/494417, filed Jun. 8, 2011, entitled “STRATIFIED TWO which requires fuel to last longer, particularly when it is used STROKE ENGINE AND FUEL SYSTEM, the entirety of on top of a tree, has advantage in having more than one fuel which is incorporated by reference herein for all purposes. canister Supplying fuel to the engine. Secondly an all attitude design for lubricating the engine would be advantageous, BACKGROUND 15 Such having oil mixed in the air-fuel mixture. Further the invention discloses a rotary valve controlled Conventional gasoline fueled four-stroke engine used in fuel injection system where the rotary valve opens and closes hand-held applications as in a trimmer and a blower sold by the crankcase port at the bottom end of the injection tube 38. Ryobi and MTD and gaseous fueled blower by LEHR are The rotary valve offers an un-symmetric port timings unlike a environmentally friendly. However, the drawback is that piston ported timing. those engines are very heavy and cannot be operated upside Further the invention discloses different dual passage gas down for extended time and the same design cannot be used eous fueled carburetors for independently regulating the air in chainsaws. Alternative two-stroke engines are advanta and air-fuel mixture.
Load more

Recommended publications
  • Valve Solutions for Pulp & Paper Applications 97.01-01
    BULLETIN 97.01-01 MAY 2021 VALVE SOLUTIONS FOR THE PULP & PAPER INDUSTRY The DeZURIK Difference Throughout our 250 years of combined history, DeZURIK, APCO, and HILTON have been recognized worldwide for collaborating with customers to design and engineer valves that provide superior performance and value. Each company was founded by an innovator who set out to solve a customer’s problem application. DeZURIK’s founder, Matt DeZURIK, started designing products for the Sartell Paper Mill in 1925 that included knot boring machines, consistency transmitters and shower pipes. When he noticed that valves weren’t able to seal due to pitch build-up, he invented the first Eccentric Plug Valve – a design still in use today, dutifully solving sealing problems worldwide. Today, the DeZURIK, APCO, and HILTON brands continue the tradition of partnering with our customers in the Pulp & Paper industry to provide the newest innovations in control, gate, plug, butterfly, automatic air and check DeZURIK’s original Eccentric Plug valves. Our vision is to deliver exceptional value to our customers Valve, developed in 1925 for the Sartell Paper Mill to solve a problem by applying our valve and problem-solving expertise to improve their with pitch build-up. operational performance. Full-Featured Valves for Today Applications DeZURIK recognizes the importance that control valves can play in process control performance and productivity. That’s why DeZURIK is dedicated to control valve testing. Regulating critical aspects of control valve performance such as accuracy, hysteresis, deadband and response time ensures that DeZURIK control valves provide optimum performance and help reduce costs. DeZURIK Knife Gate Valves and V-Port Ball Valves are widely used in pulping and stock prep operations throughout the mill.
    [Show full text]
  • Bing 64 (CV) Carburetor Part 2 (Starting Carb)
    Bing 64 (CV) Carburetor Part 2 (Starting Carb) In Part 1, we examined the basic prin- cipals of operation of the CV (Constant Velocity) carbu- retor. In this article we will take an in depth look into one of the most misunderstood subsystems of the carburetor, the “Starting Carb”. It is often referred to as the “choke”, however, this doesn’t properly de- scribe the operation of the Starting Carb. A choke is, really, a valve on the inlet side of a carburetor used to restrict the flow of air through the carburetor. This results in a low pressure with the intake manifold and carburetor sys- tem as a whole. This is different from the carburetor butterfly valve which is located down stream from the fuel nozzle which also restricts the airflow creating a low pressure, but only within the intake manifold. The choke valve which is located before the fuel nozzle pres- ents a low pressure to the entire carb. This low pressure, naturally draws more fuel through the carb and into the intake manifold resulting in an enriched mixture. The Figure: 1 Starting Carbure- tor in the Closed /Off position starting carburetor, on the other hand, is in fact a separate carburetor within the larger carburetor. This starting carb provides for an enriched mixture by introduc- ing addition fuel as well as air during the starting sequence. The starting carb on the CV carb is different from that incor- porated into the slide type carburetors used on the Rotax 2 stroke engines. The (Bing 54) carburetors, used on the 2 stroke engines also use a starting carb, Figure: 2 Starting Carb Exploded View but it operates in an On/Off capacity.
    [Show full text]
  • Valve Assembly 1 Inch Metal Seated Stainless Steel Flanged Ball Valve
    VALVE ASSEMBLY 1 INCH METAL SEATED STAINLESS STEEL FLANGED BALL VALVE Product Description • Live loaded packing • Electric actuator FOR MORE INFORMATION CALL: 800.774.5630 www.valin.com 1 1/2 INCH STAINLESS STEEL THREADED END BALL VALVE Product Description • Spring-diaphragm actuator • Limit switch • Solenoid pilot valve FOR MORE INFORMATION CALL: 800.774.5630 www.valin.com 3 INCH THREE-WAY STAINLESS STEEL BALL VALVE Product Description • Rack and pinion pneumatic actuator FOR MORE INFORMATION CALL: 800.774.5630 www.valin.com 4 INCH RUBBER SEATED BUTTERFLY VALVE Product Description • Electric actuator FOR MORE INFORMATION CALL: 800.774.5630 www.valin.com 6 INCH METAL SEATED STAINLESS STEEL FLANGED BALL VALVE Product Description • High temperature stem extension • Spring return pneumatic piston actuator • Limit switch FOR MORE INFORMATION CALL: 800.774.5630 www.valin.com 18 INCH HIGH PERFORMANCE BUTTERFLY VALVE Product Description • Custom made mounting hardware for an electric actuator FOR MORE INFORMATION CALL: 800.774.5630 www.valin.com 24 INCH HIGH PERFORMANCE BUTTERFLY VALVE Product Description • Rack and pinion pneumatic piston actuator • Limit switch FOR MORE INFORMATION CALL: 800.774.5630 www.valin.com 3 INCH SOFT SEATED CARBON STEEL FLANGED BALL VALVE Product Description • Spring-diaphragm pneumatic actuator • Custom mounting of third party digital positioner FOR MORE INFORMATION CALL: 800.774.5630 www.valin.com TWO-WAY AND THREE-WAY BRASS 3 PIECE BALL VALVES Product Description • Custom mounting of electric actuators FOR MORE
    [Show full text]
  • Throttling Butterfly Valves
    Throttling Butterfly Valves TBV-OP-LIT 01/04 TBV-D, TBV-G, for Throttling Butterfly Valves TBV-IQA and TBV-IQD for Throttling Butterfly IQ Valves UVD90-G for Universal Valve Drives Nor-Cal Products, Inc. In Europe 1967 South Oregon St. 2 Charlton Business Park Yreka, CA 96097, USA Crudwell Road, Malmesbury Tel: 800-824-4166 Wiltshire SN16 9RU, UK Fax: 530-842-9130 Tel: +44 (0) 1666 826822 www.n-c.com Fax: +44 (0) 1666 826823 INTELLISYS THROTTLING BUTTERFLY VALVES TBV-OP-LIT 01/04 Call toll free 800-824-4166 or 530-842-4457 • FAX 530-842-9130 3 INTELLISYS THROTTLING BUTTERFLY VALVES Table of Contents 1.0.................Introduction.........................................................................................................................................4 2.0.................Device specification - General...............................................................................................................5 2.1............Device specification - TBV series valves..................................................................................................6 2.2............Device specification - TBV-IQ series valves .............................................................................................7 3.0.................Unpacking and installation...................................................................................................................8 4.0.................Theory of operation..............................................................................................................................9
    [Show full text]
  • Modelling and Simulation of the Opening Process for the Aircraft Engine Starter Valve
    Modelling and Simulation of the Opening Process for the Aircraft Engine Starter Valve Yitao Liu, Chao Liu, and Zhenbo Yang School of Aircraft Maintenance Engineering, Guangzhou Civil Aviation College, Guangzhou, China [email protected], [email protected] Keywords: Engine, Starter Valve, Butterfly Valve, Pneumatic, Modelling, Simulation. Abstract: The structure and principle of the aircraft engine starter valve with dual pneumatic actuators are introduced. Characteristics of the valve, in particular the opening behaviours are analysed using mathematical models. The butterfly valve opening process under different inlet pressure is simulated on AMESim simulation environment. By comparing with test data, the model is proved to be accurate and reliable. The simulation results show that inlet pressure plays an important role in the opening process. The variables of primary interest are the rotating angle and time of the butterfly valve. In the dual actuators architecture, the valve requires less inlet pressure to rotate the butterfly disc full open and has higher reliability during aircraft operational cycle. 1 INTRODUCTION valves usually equipped with a spring and driven by pneumatic-based actuators. There have been many When starting a gas turbine aircraft engine such as research and development activities, including turbojet, turboshaft and turbofan, rotation of the mathematical modelling, numerical simulation and compressor to a speed is required to provide experimental analysis, are undertaken in order to sufficient air to the combustion chamber. The design and develop an advanced valve (J.T. Ahn, starting system of the engine often utilizes 2011; F. Danbon, 2000; N. Gulati, 2009; ZHU Su, pressurized air to drive a turbine at high speed.
    [Show full text]
  • INTERNAL COMBUSTION ENGINE COOLING STRATEGIES: THEORY and TEST John Chastain Clemson University, [email protected]
    Clemson University TigerPrints All Theses Theses 12-2006 INTERNAL COMBUSTION ENGINE COOLING STRATEGIES: THEORY AND TEST John Chastain Clemson University, [email protected] Follow this and additional works at: https://tigerprints.clemson.edu/all_theses Part of the Engineering Mechanics Commons Recommended Citation Chastain, John, "INTERNAL COMBUSTION ENGINE COOLING STRATEGIES: THEORY AND TEST" (2006). All Theses. 23. https://tigerprints.clemson.edu/all_theses/23 This Thesis is brought to you for free and open access by the Theses at TigerPrints. It has been accepted for inclusion in All Theses by an authorized administrator of TigerPrints. For more information, please contact [email protected]. INTERNAL COMBUSTION ENGINE COOLING STRATEGIES: THEORY AND TEST A Thesis Presented to the Graduate School of Clemson University In Partial Fulfillment of the Requirements for the Degree Master of Science Mechanical Engineering by John Howard Chastain, Jr. December 2006 Accepted by: Dr. John Wagner, Committee Chair Dr. Richard Figliola Dr. Darren Dawson ABSTRACT Advanced automotive thermal management systems integrate electro-mechanical components for improved fluid flow and thermodynamic control action. Progressively, the design of ground vehicle heating and cooling management systems require analytical and empirical models to establish a basis for real time control algorithms. One of the key elements in this computer controlled system is the smart thermostat valve which replaces the traditional wax-based unit. The thermostat regulates the coolant flow through the radiator and/or engine bypass to control the heat exchange between the radiator’s coolant fluid and the ambient air. The electric water pump improves upon this concept by prescribing the coolant flow rate based on the engine’s overall operation and the driver commands rather than solely on the crankshaft speed.
    [Show full text]
  • Hvac Motorized Watertight Valves Ref.: D
    · SYSTEM: HVAC SYSTEM: HVAC MOTORIZED WATERTIGHT VALVES REF.: D-MO5462-006 1 5462-006G · SYSTEM: HVAC TABLE OF CONTENTS 1. TECHNICAL AND FUNCTIONAL DESCRIPTION ............................................................................ 3 ANNEX A DATA SHEET OF VALVES AND ACTUATORS 2 5462-006G · SYSTEM: HVAC 1. TECHNICAL AND FUNCTIONAL DESCRIPTION These valves have been designed for use in heating, ventilation and air conditioning systems. These valves are opened or closed completely by an open-close rotary actuator. Continuous rotary actuators are connected to the body valve and move it to any position desired. Ventilation System Each motorized control valve with the same classification of their associated fan will be operated by means of the system control cabinets, in such way they will be opened when their associated fan receives the start command, and they will be closed when their associated fan receives the stop command. Notes: -Motorized valves with a different classification of their associated fans and do not have a local operated panel (LOP) associated: They will be opened when their associated fan receives the start command, and they will not be closed when their associated fan receives the stop command to avoid excessive overpressure in headquarters condition (but still not NBC, close down condition). “Open / Close” push buttons and “Local / Remote” switch are available in the local control panel (CTP). -Motorized valves with a different classification of their associated fans and have a local operated panel (LOP) associated: They will be opened when their associated fan receives the start command, and they will not be closed when their associated fan receives the stop command to avoid excessive overpressure in headquarters condition (but still not NBC, close down condition).
    [Show full text]
  • Specifications 6.1
    HOME SPECIFICATIONS 6.1 Table 6-1. Capacities Table 6-3. Coolant Temperatures ITEM LITERS QUARTS ITEM ˚ C˚ F Engine coolant 2.4 2.54 Thermostat initially opens 85 185 Engine oil w/filter 4.3 4.5 Thermostat fully open 100 212 Engine temperature lamp 117 243 Antifreeze protection - 36.7 - 34 Table 6-2. Coolant Pressure ITEM KPA PSI Table 6-4. Fan Operation Cap lower limit 96 14 Rated cap pressure 110 16 STATUS ˚ C ˚ F Cap upper limit 124 18 On 103 217 System pressure 103 15 Off 98 208 TORQUE VALUES ITEM TORQUE NOTES Clutch diaphragm spring 90-110 in-lbs 10.2-12.4 Nm metric, page 6-14, page 6-19 retainer bolts left hand threads, apply two drops of LOCTITE Clutch hub nut 70-80 ft-lbs 94.9-108.5 Nm THREADLOCKER 262 (red) to last few threads, page 6-11 apply two drops of LOCTITE THREADLOCKER 262 Compensating sprocket bolt 155-165 ft-lbs 210.1-223.7 Nm (red) to threads, page 6-10 Primary chain tensioner fas- 15-19 ft-lbs 20.3-25.8 Nm page 6-13 teners Primary chaincase sealing fas- 25-27 ft-lbs 33.9-36.6 Nm Special sequence to tighten, page 6-5 teners Primary cover fasteners 108-120 in-lbs 12.2-13.6 Nm special sequence to tighten, page 6-3 Apply two drops of LOCTITE THREADLOCKER 262 Primary cover sleeve 15-19 ft-lbs 20.3-25.6 Nm (red) to threads, page 6-3 Transmission lockplate screws 84-108 in-lbs 9.5-12.2 Nm LOCTITE patch, use 3-5 times, page 6-22 right hand threads, initial torque only, apply several Transmission sprocket nut 100 ft-lbs 135.6 Nm drops of LOCTITE THREADLOCKER 271 (red) to last few threads.
    [Show full text]
  • Type A31A High Performance Butterfly Valve (NPS 14 Through 24)
    Instruction Manual Form 5291 March 2008 A31A Valve Type A31A High Performance Butterfly Valve (NPS 14 through 24) Contents Introduction ............................... 1 Scope of Manual .......................... 1 Description ............................... 1 Specifications Table ....................... 2 Installation ................................ 4 Valve Orientation ......................... 5 Before Installing the Valve .................. 5 Adjusting the Actuator Travel Stops or Travel. 8 Installing the Valve ........................ 8 Packing Adjustment and Shaft Bonding...... 9 Maintenance .............................10 Removing and Replacing the Actuator...... 10 Packing Maintenance .....................10 Removing the Valve ......................11 Seal Maintenance ........................11 PTFE Seals ............................11 W9134-1 NOVEX, Phoenix III and/or Figure 1. Type A31A Valve with Bettisr Actuator and Phoenix III Fire-Tested Seals ..........14 DVC6020 Digital Valve Controller Anti-Blowout Design, Packing, Valve Shaft, Disc, and Bearing Maintenance ..........15 your Emerson Process Managementt sales office Installing the Two-Piece Shaft ............16 before proceeding. Gasket Retainer .........................18 Parts Ordering ............................18 Parts List ................................19 Description The valve is available in either a flangeless wafer body or a single-flange (lugged) body design, with a Introduction variety of seals and internal components. The pressure-assisted seal provides tight
    [Show full text]
  • How Does a Carburetor Work? 1 of 18
    How does a carburetor work? 1 of 18 revzilla.com How does a carburetor work? Lemmy 17-22 minutes A carburetor is a highly sensitive, precision instrument designed to blend fuel and air in the correct ratio across the rather dynamic operating range of an internal combustion engine. They’re also, believe it or not, very easy to understand. While I won’t say that carburetors and their tuning (tailoring carburetion to a particular engine and even specific use scenario) are easy, their principle of operation is quite simple, and service is usually easy to perform if the carburetor design is a workable one and there is sufficient access to it. Carburetors are kind of neat because we still live in an era where they are used (and arguably the most complicated and best carburetor designs are all that are left in play), but due to emissions restrictions, they are no longer developed. They’re sort of a living fossil in that respect. In order to best explain carburetor design and improvement, I’m going to do what I usually do: take you back to earlier times to understand the simplest form of the topic we’re covering, and then we’ll skip ahead to all the big major about:reader?url=https://www.revzilla.com/common-tread/how-does-a-carburetor-work How does a carburetor work? 2 of 18 milestones. I’ll also pepper in some factoids so this doesn’t get dry. Here's the basic idea behind a venturi. If you understand this, you've pretty much got the hang of a carb.
    [Show full text]
  • HOW to CHOOSE the RIGHT AIR INTAKE SHUTOFF SYSTEM the Selection Guide
    HOW TO CHOOSE THE RIGHT AIR INTAKE SHUTOFF SYSTEM The Selection Guide Selecting the right valve is the first step to ensuring that your diesel engine is well protected against becoming an ignition source should the engine overspeed. Since we offer a wide range of valves and systems from AMOT, Chalwyn, Roda Deaco, and RIGSAVER, we can narrow down the choices by knowing specific information about the application. Use the filters on our product database to select a valve by application type or engine model. If you don’t know the application or engine model, follow the steps below and select a valve using the intake piping diameter and activation source: RPM (automatic) or manual. Step Choose installation location and 1 measure the air intake pipe diameter Step Choose automatic or 2 manual actuation Step 3 Consider the application Step 1: Choose installation location and measure the air intake pipe diameter If it is not possible to install the valve in either of these locations, the next best option is pre-turbo Note: If you have a hose, use the inside dimension; if you have a pipe, use the outside dimension. after the air filter, , (Fig 3). Caution: Never mount air intake shutoff valves before the air filter. If you have multiple intakes (i.e., V-style engines), you will need multiple valves. x A. Installation on Turbo-Charged Engines Exhaust Manfold Intake Manifold The ideal location to install an air intake shutoff valve,x , is post turbo after the intercooler, as Fig 3: Pre-Turbo/ close to the intake manifold as possible (Fig 1).
    [Show full text]
  • PRATT® SERIES 300 PLUNGER VALVES Engineering Creative Solutions for Fluid Systems Since 1901 PRATT® SERIES 300 PLUNGER VALVES
    PRATT® SERIES 300 PLUNGER VALVES Engineering Creative Solutions for Fluid Systems Since 1901 PRATT® SERIES 300 PLUNGER VALVES TABLE OF CONTENTS NEW CHALLENGES... The production and operation of control valves requires engineering expertise and Features and Benefits ..........................................1 strict production controls to ensure diverse international requirements to be met: Pratt® Series 300 Plunger Valves .................. 2-3 • International standards, approvals and test regulations set the highest quality Performance and Control. ................................4 requirements. Specialty Applications .........................................5 • The increased cost of energy requires optimum flow performance with minimum Design Advantages ........................................... 6-7 pressure losses to ensure economical operation. Dimensions and Specifications .......................8 • Valves designed for long life and low maintenance costs ensure that the personnel Project Planning .....................................................9 costs necessary for operation are minimized. All the costs incurred over the A Tradition of Excellence ................................13 operational life of the valve (life cycle costs) must play a decisive role in the choice of product. INTRODUCTION ... AND THE SOLUTIONS FROM US Plunger Valves are the correct valve to use whenever pressure heads or flow rates The wide range of Pratt Plunger Valves, manufactured us by ERHARD, founded in 1871, fills these requirements in a particular
    [Show full text]