Locomotive Fuel System and Crankshaft Maintenance

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Questions and Answers

What can contribute to the failure of the locomotive when fuel oil pressure does not build up?

Properly functioning fuel booster pump

Too much fuel in the tank

Water contamination in the fuel (correct)

High efficiency filters used

Which of the following issues can directly lead to leakage in the fuel oil system?

Bursting of high pressure tubes (correct)

Low quality fuel filters

Sticking of relief and regulating valve

Broken delivery valve spring

What is a primary cause of clogging in fuel filters in a locomotive?

High efficiency fuel injections

Prolonged use of fuel

Micro-biological growth in the fuel tank (correct)

Inadequate fuel pump motor connections

What is a potential consequence of a broken carbon brush in the fuel booster pump?

Complete loss of fuel pressure Signup and view all the answers

Which maintenance step is crucial for enhancing the reliability of the fuel oil system?

Monthly checking of fuel oil vacuum Signup and view all the answers

What is the primary function of the crankshaft in the locomotive engine?

To transform reciprocating motion to rotary motion Signup and view all the answers

What material is commonly used for manufacturing ALCO locomotive crankshafts?

Forged steel alloy Signup and view all the answers

How do the crankshaft webs contribute to the crankshaft's functionality?

They aid in balancing the crankshaft during operation Signup and view all the answers

In a locomotive engine, how is oil delivered to the crankshaft and its bearings?

Via a continuous flow from the main lubricating header under pressure Signup and view all the answers

What component is found at the power take-off end of the crankshaft?

The camshaft gear Signup and view all the answers

Which design feature of the crankshaft ensures symmetrical operation?

The placement of crankpins in pairs on the shaft Signup and view all the answers

What is the primary benefit of machining the main bearing journals and crankpins to a high degree of smoothness?

To reduce friction between moving parts Signup and view all the answers

What is the compression ratio of the engine?

11.75:1 Signup and view all the answers

How many cylinders does the engine have?

16 Signup and view all the answers

What is the rated power of the engine under standard conditions?

3100 HP Signup and view all the answers

What is the bore-to-stroke ratio of the engine?

0.83 Signup and view all the answers

What is the total swept volume of the engine?

10688 Cu-in Signup and view all the answers

What is the idle speed of the engine?

350 rpm Signup and view all the answers

What type of aspiration does the engine use?

Turbo supercharged and charge air cooling Signup and view all the answers

What is the mean piston speed of the engine?

1837.45 fpm Signup and view all the answers

What is the weight of the engine when wet?

44231 lbs. Signup and view all the answers

What is the axle load in tonnes for the WDG4 locomotive?

21.42 Signup and view all the answers

Which type of electrical transmission is utilized in the WDM2C locomotive?

AC/DC Signup and view all the answers

What is the gear ratio (Pinion: Bull gear) for the WDG4 locomotive?

17:90 Signup and view all the answers

In terms of traction motor arrangements, what distinguishes the WDG4 from the WDM2 and WDM2C locomotives?

LLL/RRR Signup and view all the answers

What happens to the D.B. during TN Isolation for the WDG4?

Will not function Signup and view all the answers

What type of master controller does the WDM2 locomotive have?

Alco model Signup and view all the answers

Which locomotive has a transition feature with field shunting?

WDM2 Signup and view all the answers

What unique feature does the WDM2C locomotive offer for cranking?

Generator working as motor Signup and view all the answers

Which of the following is true regarding the defective traction motors in the WDM2C locomotive?

Particular truck can be isolated Signup and view all the answers

What is the effort adhesive weight percentage for the WDM2 locomotive?

24.5% Signup and view all the answers

What is a potential cause of excessive oil throw from the CCE motor exhaust pipe?

Choking of return oil passage to the sump Signup and view all the answers

Which corrective action should be taken if leakage is found from the tappet cover?

Change the gaskets Signup and view all the answers

What type of valve setting must be properly adjusted to prevent issues in the lube oil system?

Pressure relief valve Signup and view all the answers

What is one reason that could lead to the bursting of flexible pipes in the lube oil system?

Excessive gap between pipes Signup and view all the answers

Which situation may indicate a defective lube oil pump?

Pressure not building up as expected Signup and view all the answers

What should be done if the extension shaft seal is not damaged but leakage is still observed?

Focus on the power pack Signup and view all the answers

What is the first step to check external leakage in the lube oil system?

Notch up the locomotive to 8th notch Signup and view all the answers

What is the main purpose of ensuring proper clamping in the lube oil system?

To prevent misalignment and leaks Signup and view all the answers

What can cause contamination that changes the properties of oil in the lube system?

Fuel oil or cooling water leaks Signup and view all the answers

What is a critical factor in maintaining the integrity of the lube oil filter housing?

The condition of fly nuts Signup and view all the answers

Study Notes

North Western Railway Supervisor's Training Centre, Ajmer

Course Textbook for MSE/MJR (Diesel) - Session III
Published by the North Western Railway, Jaipur
Documents include forewords by various senior engineers
Topics covered include Diesel Locomotive Introduction, Transmission System of Diesel Locomotives, Constructional Details of Diesel Locomotives, Lubricating Oil System, Brake System, Safety Devices, Rotating Equipments, and more.
Detailed index is provided for easy navigation of the content

Course Content Index

Diesel Locomotive Introduction
Transmission System of Diesel Locomotives
Constructional Details of Diesel Locomotives
Lube Oil System of Diesel Locomotives (ALCO)
Fuel Oil System of Diesel Locomotives (ALCO)
Water Cooling System of Diesel Locomotives (ALCO)
Turbo-Supercharger
Air Compressor
Brake System of Diesel Locomotives
Bogie of ALCO Loco
Safety Devices in ALCO Loco
Rotating Equipments
Excitatin System
Transition System
Dynamic Braking
Control System
Load Box Testing
Traction Motor
Microprocessor Control System
New Developments
Shed Layout
GM/EMD Locomotive
General Engine Arrangement
Lubricating Oil System (GM Loco)
Cooling System of Diesel Locomotive (GM Loco)
Fuel Oil System of Diesel Locomotive (GM Loco)
Compressed Air System
Difference between WDG4 and WDP4 GM Locomotives
HTSC Bogie (High Tensile Steel Cast)
Electrical System
EM 2000 Computer
Rotating Equipment
Computer Controlled Brake System

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Description

This quiz covers critical knowledge regarding locomotive fuel systems and crankshaft maintenance. It addresses common issues that can lead to failures, the importance of regular maintenance, and the materials used in crankshaft manufacturing. Test your understanding of how these components function and their impact on locomotive performance.