COCR of LHB Variant Coaches on HWH-NDLS-HWH Rajdhani route (via Gaya) upto 130 km/h
FOREWORD
This report is based on tests conducted by the Testing Directorate of RDSO. Although every care has been taken for recording data accurately and analyzing it objectively, the views expressed in this report are subject to modifications, in the light of fresh data, from time to time. Further, they do not necessarily represent the views of the Ministry of Railways (Railway Board), Government of India.
This report is the property of RDSO and is meant essentially for official use. It may not be loaned, reproduced in part or full, or quoted as an authority without prior written permission of Director General, RDSO, Lucknow.
( V. Singh ) ( Uttam Prakash ) Executive Director (Research Testing) Director Testing (OT-III)
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REPORT SUMMARY
1. Report No. MT- 634/F,December,2005 2. Title Confirmatory Oscillograph Car Run on LHB Variant AC Generator Van LWLRRM, AC 2 Tier LWACCW and AC 3- Tier LWACCN on Howrah- New Delhi - Howrah Rajdhani route ( via Grand Chord) upto a maximum speed of 130 Kmph
3. File Reference RM2/ RP 4. Unit Conducting Trials Unit OT-III
5. Nature of Trial Confirmatory Oscillograph Car Run ( COCR )
6. Test Site Howrah- New Delhi- Howrah section of Eastern, East Central, North Central and Northern Railway. 7. Test Period 3rd Dec.’ 05 to 11th Dec.’ 05 8. Test Vehicle LHB Variant AC Generator Van LWLRRM, AC 2 tier LWACCW & AC 3 Tier LWACCN. 9. Design Features FIAT Bogie 10. Test Objective To assess the riding behaviour of Howrah-New Delhi- Howrah section for operation of Rajdhani Express with LHB variant coaches upto a maximum speed of 130 kmph
11. Result The riding behaviour of LHB variant AC generator van, AC 2 tier and AC 3 Tier coaches have been found satisfactory on Howrah- New Delhi- Howrah section of Eastern, East Central, North- Central and Northern Railway upto 130 Kmph. 12. Trial-Expenditure Rupees 20,41,809/-
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CONTENTS
S.No. TITLE PAGE
1 INTRODUCTION 1-2
2. TEST OBJECTIVE 2-3
3. INSTRUMENTATION 3
4. TEST TRAIN 3-4
5. CRITERIA FOR ASSESSMENT 4
6. DISCUSSION OF TEST RESULTS 4-5
7. CONCLUSION 5
8. SUMMARY-TABLE 1 to 4 6-7
9. DATA SHEET 1 to 8 ( Total 27 Pages )
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Confirmatory Oscillograph Car Run (C.O.C.R.) on LHB variant AC Generator Van (LWLRRM), AC-2 Tier (LWACCW) and AC-3 Tier (LWACCN) on Howrah-New Delhi-Howrah Rajdhani route ( Via Grand chord ) upto a maximum speed of 130 Kmph.
1. INTRODUCTION
Indian Railways have procured state- of- art AC EOG coaches from M/s. ALSTOM- LHB alongwith Transfer of Technology. These coaches built by LHB, Germany comprise AC chair cars and Ac generator vans, fitted with center buffer couplers and are equipped with FIAT bogies to 16.25 t axle load capacity. These coaches have been designed to operate up to a maximum speed of 160 kmph. LHB Ac chair cars and generator vans have been subjected to detailed oscillation trials up to test sped of 180 km/h and the results of the trials and references of subsequent final speed certificates issued are as below :
S. Type Test Maximum Results of Final speed No. of section test speed oscillation certificate coach ( km/h) Trials ( 160 km/h) 1 AC Palwal- 180 MT-240 MC/LHB/Coach Chair Mathura ( June 2000) dt. 19-3-2003 Car 2 AC a)Palwal – a)145 MT-274 MC/LHB/Coach Generator Mathura (Feb 2001) dt. 20-3-2003 Van b)Ghaziabad– b)145-180 MT-282 Tundla (March 2001)
Rail Coach Factory, Kapurthala have manufactured variant coaches (EOG) to LHB technology. These coaches comprise FAC ( EOG), ACCW ( EOG), ACCN ( EOG), AC Hot Buffet Car and AC Generator van. The bogies and axle loads of FAC ( EOG), ACCW ( EOG) and AC Hot Buffet Car ( EOG) are identical to LHB AC chair car bogies.
RDSO has designed the bogie suspension and coach layout for use on LHB variant AC 3- Tier coach ( ACCN) , generally to the LHB design of above coaches. RCF has manufactured ACCN coach, based on RDSO’s design .The prototype ACCN coach has been subjected to detailed Oscillation trials at a maximum test speed of 180 km/h on Ghaziabad- Tundla high speed section of North Central Railway. The results of these Oscillation trials are contained in RDSO’s report No. MT –412 ( May 2003 ) . Results of trials indicate satisfactory riding and stability behaviour up to a maximum test speed of 180 km/h on track maintained to standards as specified in RDSO’s report No. C&M – 1 Vol .1
Before introduction of these coaches on Rajdhani Express service between Howrah- New Delhi ( Via Gaya ) , it was proposed to
Testing Directorate Report No. MT-634/F,December-2005 Page 1 of 7
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conduct Confirmatory Oscillograph Car Run ( COCR) upto a maximum speed of 130 km/h on Howrah- New Delhi route ( Via Gaya ) in both Up and Down direction, on a rake consisting of locomotive followed by maximum 19 numbers of LHB AC variant coaches.
For confirmatory Oscillograph car runs upto speed of 130 km/h, the test special consisted of one locomotive followed by maximum 19 numbers of LHB AC variant coaches ( 17 nos. Ac coaches marshalled between 2 nos. Generator Vans). Test formation shall comprise of at least one coach out of FAC ( EOG) / ACCW( EOG)/ WCBAC( EOG) and at least one number of ACCN ( EOG) coach. Three types of coaches shall be instrumented as indicated below :
1. FAC ( EOG)/ ACC W ( EOG)/ WCBAC (EOG) 2. ACCN ( EOG) 3. Generator Van,WLRRM.
The confirmatory oscillograph car run was conducted over the entire Howrah- New Delhi section (via Gaya ) in both up and Down direction upto a maximum sped of 130- kmph.
1.1 With a view to introduce LHB Variant Coaches on Howrah- New Delhi Rajdhani route of Eastern , East Central, North Central and Northern Railway upto 130 kmph, Oscillograph Car Run (COCR) was conducted between Howrah – New Delhi- ( UP and DOWN line) of Eastern , East Central , North Central, Northern Railway upto 130 Kmph in Dec. 2005.
1.2 The Trial Run was conducted as per the following documents: i) RDSO’s speed certificate No. MC/LHB/Trial dated 29.9.2005 ii) CRS/ Eastern Circle’s sanction No. 3352/A/99-04/201/ H dt. 30.9.2005 ( Howrah- Pradhankhanta Section of E. Rly. ) iii) CRS/ Eastern Circle’s sanction No. 3352/A/05/234/ dt. 24.10.2005 ( Pradhankhanta – Mughalsarai Section of E. C. Rly. ) iv) CRS/ North Eastern Circle’s sanction No. sanc/3499/LHB/NCR dt.14.11.2005 ( Mughalsarai- Ghaziabad section of N.C. Rly. ) 1.3 Test run upto 130 kmph from Howrah to New Delhi and back was conducted with a WAP7 locomotive and 19 LHB variant coach Train composition from 03.12.2005 to 11.12.2005, observing all speed restrictions in force.
2. TEST OBJECTIVE To assess the riding behaviour of LHB variant AC Generator Van, AC 2 Tier sleeper and AC 3- Tier sleeper vis-à-vis the track upto a maximum speed of 130 kmph during the COCR conducted with LHB variant coaches on Howrah-New Delhi- Howrah section of Eastern, East Central,
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North-Central & Northern Railways, before introduction of these coaches on Rajdhani Express. 3. INSTRUMENTATION 3.1 LHB Variant AC Power Car No. LWLRRM-05851 (1st from engine) was instrumented at trailing bogie pivot on floor level to measure the vertical and lateral accelerations. 3.2 LHB Variant Ac 2-Tier sleeper Car No. LWACCW-05053 ( 2nd from engine) was instrumented at trailing bogie pivot on floor level to measure the vertical and lateral accelerations. 3.3 LHB Variant AC 3-Tier sleeper Car No. LWACCN –05102 (3rd from engine) was instrumented at trailing bogie pivot on floor level to measure the vertical and lateral accelerations. 3.4 Strain gauge based accelerometers with +2g range were used. 3.5 Recording was done by computerised data acquisition system with a sampling rate of 100 samples/sec./channel. 3.6 Recording was done for 80 kmph and higher speeds upto 130 Kmph maximum.
4. TEST TRAIN
4.1 For test run, the formation of test train was as below : WAP7 – 30205 (Gomoh Shed/E. C.Rly.) (1) LWLRRM - 05851 (2) LWACCW- 05053 (3) LWACCN - 05102 (4) LWCBAC - 05801 (5) LWFACCW- 04003 (6) LWACCW - 05054 (7) LWACCW- 05055 (8) LWCBAC - 05803 (9) LWACCW- 05051 (10) LWACCW - 05056 (11) LWACCW - 05052 (12) LWACCN - 05104 (13) LWACCN - 05101 (14) LWACCN - 05105 (15) LWACCN - 05108 (16) LWACCN - 05106 (17) LWACCN - 05107 (18) LWACCN - 05103 (19) LWLRRM - 05852
4.2 After completion of test run from Howrah to New Delhi, the locomotive WAP7 – 30205 alongwith the whole rake of 19 LHB variant coaches was face turned at New Delhi on the intervening night of 7th/8th December, 2005 for the return trip from New Delhi to Howrah.
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5. CRITERIA FOR ASSESSMENT
Criteria for assessment for Confirmatory Oscillograph Car Run as given on the 3rd report of standing criteria committee are reproduced below :
5.1 The average number of peaks of the vertical and lateral accelerations exceeding 0.30g should be limited to 0.25 peaks per recorded kilometer. However, the number of peaks in any one kilometer should not exceed one, and where this limit is exceeded, the track requires attention.
5.2 The locations where the peaks of vertical / lateral accelerations exceed 0.35g, the track will have to be attended to.
6. DISCUSSION OF TEST RESULTS
From the study & analysis of the enclosed Data-sheets ( 1 to 8 ) ,it can be understood that no where on the recorded kilometers of the up and down line of Howrah-New Delhi- Howrah section ( via grand chord), the value of vertical and lateral acceleration recorded by three types of test coaches exceeded the value of 0.30 g or 0.35g. Max. value of vertical & lateral Acceleration recorded on up and down line by the Test coaches are given below :
HOWRAH To NEW DELHI NEW DELHI To HOWRAH Details of Vehicle ( Up line) ( Down line)
Maximum Vertical Maximum Lateral Maximum Vertical Maximum Acceleration ( g ) Acceleration ( g ) Acceleration ( g ) Lateral Acceleration ( g ) LHB Variant AC power Car (LWLRRM) 05851 (Trailing Bogie) 0.272 0.236 0.243 0.182
LHB Variant AC-2 Tier sleeper CAR (LWACCW) 05053 (Trailing Bogie) 0.280 0.228 0.195 0.164
LHB Variant AC-3 Tier Sleeper (LWACCN) 05102 (Trailing Bogie) 0.224 0.265 0.231 0.216
6.2 No resonance tendency was found on any of the Test Coaches passing over the bridges encountered during the run.
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6.3 From the study of the above table, it can be found that riding behaviour of LHB Variant coaches are satisfactory as per the criteria of assessment.
7. CONCLUSIONS
The riding behaviour of LHB Variant AC Generator Van LWLRRM , LHB Variant AC 2 Tier sleeper Car LWACCW and LHB variant AC 3- Tier sleeper car LWACCN have been found satisfactory in,both Up & Down line directions on Howrah-Ghaziabad-Howrah section via Grand Chord of Eastern , East-Central and North-Central Railway upto 130 Kmph.
The subjective feeling on all the test coaches was found to be very good. This is in conformity with the low value of acceleration recorded during the COCR.
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SUMMARY TABLE N0. 1 Testing Directorate Report No. MT-634/F,December-2005 Page 5 of 7
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SUMMARY OF TRIAL OVER HOWRAH- PRADHANKHANTA ( UP & DOWN )SECTION OF EASTERN RAILWAY UPTO SPEED OF 130 KMPH
S.No. Description Up line Down line Recorded / Non-recorded 1 km. Stretches 1. Total Route kms 260 260 2. Total Recorded 1 km stretches 222 190 3. At 130 kmph 120 90 4. 120 kmph 09 28 5. 110 kmph 14 24 6. 100 kmph 41 31 7. 90 kmph 07 12 8. 80 kmph 11 05 9. Total Non-recorded 1 km stretches 38 70
SUMMARY TABLE N0.2
SUMMARY OF TRIAL OVER PRADHANKHANTA - MUGHALSARAI ( UP & DOWN) SECTION OF EAST CENTRAL RAILWAY UPTO SPEED OF 130 KMPH
S.No. Description Up line Down line Recorded / Non-recorded 1 km. Stretches 1. Total Route kms 412 412 2. Total Recorded 1 km stretches 305 322 3. At 130 kmph 214 217 4. 120 kmph 30 33 5. 110 kmph 15 22 6. 100 kmph 25 16 7. 90 kmph 10 13 8. 80 kmph 11 21 9. Total Non-recorded 1 km stretches 107 90
SUMMARY TABLE N0. 3
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SUMMARY OF TRIAL OVER MUGHALSARAI - GAZIABAD ( UP & DOWN ) SECTION OF NORTH CENTRAL RAILWAY UPTO SPEED OF 130 KMPH
Down S.No. Description Up line line Recorded / Non-recorded 1 km. Stretches 1. Total Route kms 758 758 2. Total Recorded 1 km stretches 604 626 3. At 130 kmph 419 475 4. 120 kmph 41 35 5. 110 kmph 39 25 6. 100 kmph 46 43 7. 90 kmph 28 20 8. 80 kmph 31 28 9. Total Non-recorded 1 km stretches 154 132
SUMMARY TABLE N0.4
SUMMARY OF TRIAL OVER GAZIABAD – NEW DELHI ( UP & DOWN) SECTION OF NORTHERN RAILWAY UPTO SPEED OF 130 KMPH
S.No. Description Up line Down line Recorded / Non-recorded 1 km. Stretches 1. Total Route kms 20 20 2. Total Recorded 1 km stretches NIL 05 3. At 130 kmph NIL NIL 4. 120 kmph NIL NIL 5. 110 kmph NIL NIL 6. 100 kmph NIL NIL 7. 90 kmph NIL NIL 8. 80 kmph NIL 05 9. Total Non-recorded 1 km stretches 20 15
Practically, it is not possible to run the Test Train at 130 kmph speed on GZB- NDLS-GZB route due to various Speed Restriction imposed & operational problems. However, the stretches where the speed could be raised to at teast 80 kmph &above, have been recorded.
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C R E D I T S
The test was conducted by the following staff of Unit M-III Under the guidance of Shri Uttam Prakash, Director Testing/ OT-III and Shri B.K.Mukherjee, AREM-OT-III.
1- Sh. J.P.Koli SSRE/MD
2- Sh.R.K.Srivastava SE/Mech.
3- Sh.S.K.Yadav SRE/MD
4- Sh.A.K.Chaturvedi JE-1/Inst.
5- Sh.S.K.Murmu JE-II/MD
6- Sh.M.K.Meena JE-II/Inst.
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