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US 2010/0258088 A1 Harrison Et Al US 2010O258O88A1 (19) United States (12) Patent Application Publication (10) Pub. No.: US 2010/0258088 A1 Harrison et al. (43) Pub. Date: Oct. 14, 2010 (54) SPEED AND POSITION SENSING DEVICE Publication Classification FOR EMD TWO-CYCLE DESEL ENGINES (51) Int. Cl. FO2M 5L/00 (2006.01) (76) Inventors: Edward H. Harrison, Goodland, B23P6/00 (2006.01) FL (US); Keith Mulder, Naples, FL GOIM I5/00 (2006.01) (US); Edward A. Schlairet, Naples, (52) U.S. Cl. .................... 123/478: 29/888.01 1; 123/472: FL (US) 73/114.25 (57) ABSTRACT Correspondence Address: A device is disclosed for sensing the speed of an EMD 567/ PORTER WRIGHT MORRIS & ARTHUR, LLP 645/710 two-cycle diesel engine having a crankcase, elec INTELLECTUAL PROPERTY GROUP tronic fuel injectors and an electronic control system for 41 SOUTH HIGH STREET, 28TH FLOOR controlling the electronic fuel injectors. The device includes COLUMBUS, OH 43215 a spline shaft sized for insertion into the crankcase of the engine so that the spline shaft rotates with the engine, a gear (21) Appl. No.: 12/622,815 operably secured to the spline shaft to rotate with the spline shaft and sized to rotate with the engine in a 1:1 ratio, and at least one electronic sensor located adjacent the gear to sense (22) Filed: Nov. 20, 2009 rotation of the gear. The at least one electronic sensor is connectable to the electronic control system to provide elec Related U.S. Application Data tronic signals to the electronic control system for determining when to inject fuel with the electronic fuel injectors. Also (63) Continuation-in-part of application No. 12/496.219. disclosed is a method for retrofitting the engine and a kit for filed on Jul. 1, 2009. retrofitting the engine. ?o 40 WT aesareas 42 472422zs2U422a Patent Application Publication Oct. 14, 2010 Sheet 1 of 18 US 2010/0258088 A1 do gffº On 07 Patent Application Publication Oct. 14, 2010 Sheet 2 of 18 US 2010/0258088 A1 i Patent Application Publication Oct. 14, 2010 Sheet 3 of 18 US 2010/0258088 A1 '6|-|g19?ud)(luw Patent Application Publication Oct. 14, 2010 Sheet 4 of 18 US 2010/0258088 A1 s J f9%7900||$$ Patent Application Publication Oct. 14, 2010 Sheet 5 of 18 US 2010/0258088 A1 Patent Application Publication Oct. 14, 2010 Sheet 6 of 18 US 2010/0258088 A1 80SNES INW1000 'd||E1BOSNES 97 TIO'801 E}{[SSE}}d HOSNES 36 98 81 00|| 03 HEMO0HON 89 TIN?80SNES| Patent Application Publication Oct. 14, 2010 Sheet 7 of 18 US 2010/0258088 A1 Patent Application Publication Oct. 14, 2010 Sheet 8 of 18 US 2010/0258088 A1 Patent Application Publication Oct. 14, 2010 Sheet 9 of 18 US 2010/0258088 A1 62 70 Fig. 9 Fig. 10 Patent Application Publication Oct. 14, 2010 Sheet 10 of 18 US 2010/0258088 A1 Patent Application Publication Oct. 14, 2010 Sheet 11 of 18 US 2010/0258088 A1 Patent Application Publication Oct. 14, 2010 Sheet 12 of 18 US 2010/0258088 A1 224 IVa - AIM-V-E hit V I/DSO EA NYi AVAugini K.I. NAME f III ETH | ATHE 209) IULLEEEEEEEEisESE-E SS - O L. H. FIG. 12B Patent Application Publication Oct. 14, 2010 Sheet 13 of 18 US 2010/0258088 A1 82 244- 246 242 64 FIG. 12C Patent Application Publication Oct. 14, 2010 Sheet 14 of 18 US 2010/0258088 A1 82 244- 24 (a 248 84 Patent Application Publication Oct. 14, 2010 Sheet 15 of 18 US 2010/0258088 A1 26 O 82 244- 24 (a 248 94 FIG. 12E Patent Application Publication Oct. 14, 2010 Sheet 16 of 18 US 2010/0258088 A1 94 O 90 88 N 9. Fig. 14 Fig. 15 90 88 - O 96 92 Fig. 13 Patent Application Publication Oct. 14, 2010 Sheet 17 of 18 US 2010/0258088 A1 Patent Application Publication Oct. 14, 2010 Sheet 18 of 18 US 2010/0258088 A1 US 2010/0258088 A1 Oct. 14, 2010 SPEED AND POSITION SENSING DEVICE life—a unique feature of this engine segment compared to FOR EMD TWO-CYCLE DESEL ENGINES Smaller engine models. Some existing engines may exceed fifty years of age. Because of the emission standards, how CROSS-REFERENCE TO RELATED ever, the owners of these EMD 567/645/710engines are faced APPLICATIONS with the option of either overhauling or rebuilding the engines to meet the newer emission standards or retiring the engines 0001. This application is a continuation-in-part of U.S. early and purchasing new technology engines that meet the patent application Ser. No. 12/496.219 filed on Jul. 1, 2009, current emission standards. As a result, the owners of these the disclosure of which is expressly incorporated herein in its engines stand to incur a heavy financial loss. Accordingly, entirety by reference. there is a need for a cost effective system and method for extending the useful life of these two-cycle diesel engines STATEMENT REGARDING FEDERALLY without requiring an expensive overhaul or new replacement SPONSORED RESEARCH engine. 0002. Not Applicable 0009. One method for reducing the emissions on these engines involves the installation of electronic fuel injection. REFERENCE TO APPENDIX The current system utilizes mechanical injection where the injection is determined based on machined dimensions that 0003) Not Applicable are fixed, and do not vary during the use of the product. Electronic injection allows flexibility by varying the injection FIELD OF THE INVENTION based on numerous inputs. Some of these inputs may include 0004. The field of the present invention generally relates to ambient temperature, altitude, geographic location, and so two-cycle diesel engines produced by the Electro-Motive forth. Since the injectors are no longer fixed mechanically Division (EMD) of General Motors Corporation and, more they require input from the engine as to the speed and position particularly, to monitoring the engine speed and position for of the drive-train to determine with accuracy the time to Such engines. begin, hold, and end, injection. New engines with electronic fuel injection incorporated in to the design utilize the fly BACKGROUND OF THE INVENTION wheel for the monitoring and measurement of speed and 0005. As part of the U.S. Environmental Protection Agen RPM. The utilization of a once per revolution sensor to sense cy's (USEPA) ongoing National Clean Diesel Campaign, the the absolute position, and then the monitoring of the flywheel EPA has adopted new standards that dramatically reduce teeth for synchronizing the position during the revolution is emissions of nitrogen oxide (NO), diesel particulate matter done utilizing two sensors on the flywheel. The concern with (PM), unburned hydrocarbon (HC), and carbon monoxide this prior art is that the sensors have a history of being dam (CO) from locomotive and marine diesel engines. Engines aged and moved due to their location in an area of the engine produced from 2005 to 2010 must meet US EPA Tier 2 that is frequently accessed by mechanics. Accordingly, there standards, while engines produced from 2011 to 2014 must is a need for an accurate device for monitoring and measuring meet US EPA Tier 3 standards and engines produced from the speed and position of these two-cycle diesel engines that 2015 and beyond must meet US EPA Tier 4 standards. It is can be easily installed in a retrofit or new application and in a noted that engines produced prior to 1973 were uncontrolled position for reliable operation. while engines produced from 1973 to 2001 were required to meet US EPA Tier 0 standards and engines produced from SUMMARY OF THE INVENTION 2002 to 2004 were required to meet US EPA Tier1 standards. 0010. The present invention provides a method and device 0006 While these EPA standards primarily relate to new which overcomes at least some of the above-noted problems and remanufactured engines, there is increasing pressure to of the related art. Disclosed is a device for sensing the speed reduce emissions of all existing non-road diesel engines. of an EMD 567/645/710 two-cycle diesel engine having a Eventually, all existing locomotive engines produced prior to crankcase, electronic fuel injectors and an electronic control 1973 must meet the US EPA Tier 0 standards and potentially system for controlling the electronic fuel injectors. The even lower emission levels. For locomotives operating in device includes a spline shaft sized for insertion into the specific emissions-regulated locations including California crankcase of the engine so that the spline shaft rotates with the and Texas, emission levels must be reduced further with engine, a gear operably secured to the spline shaft to rotate agreements to encourage the use of engines that meet the US with the spline shaft and sized to rotate with the engine in a 1:1 EPA Tier 2 standards. ratio, and at least one electronic sensor located adjacent the 0007 EMD produced more than 70,000 engines and has gear to sense rotation of the gear. The at least one electronic the largest installed base of diesel-electric locomotives in sensor is connectable to the electronic control system to pro both North America and internationally. Among the two vide electronic signals to the electronic control system for cycle diesel engines produced by EMD are the EMD 567 determining when to inject fuel with the electronic fuel injec series which was produced from 1938 until 1966 and the tOrS. EMD 645 series which was produced from 1965 until 1988. 0011. Also disclosed is a kit for reducing exhaust emis The EMD 710 series which was produced from 1985 and is sions from an existing EMD 567/645/710 two-cycle diesel still produced currently.
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