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Exam 24: Sleeve-Metering Rotary Distributor Pumps

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Question 1

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At what relative speed must a sleeve metering, rotary distributor injection pump be driven when used to fuel a 4-stroke cycle diesel engine, with 6 engine cylinders?

A) half engine speed
B) engine speed
C) two times engine speed
D) six times engine speed

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A

Question 2

Multiple Choice

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Technician A says that most hydromechanical rotary-distributor diesel injection pumps are used to fuel small bore engines. Technician B says that most hydromechanical rotary-distributor diesel injection pumps are used in older indirect injection (IDI) diesel applications. Who is correct?

A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B

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Question 3

Multiple Choice

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In a Bosch type sleeve metering rotary distributor pump what locks the distributor plunger into its position relative to the cam plate?

How many high pressure pumping plungers are used in a Bosch type, sleeve metering, rotary distributor pump used to fuel a six cylinder engine?

What defines plunger actual stroke in a sleeve metering rotary distributor pump?

What is the maximum number of engine cylinders that can be fueled using a Bosch VE sleeve metering, rotary distributor pump?

When a Bosch EDC-VE fuel pump is used to fuel a V-configured, 6-cylinder engine, how many high pressure pipes are used to deliver fuel from the injection pump to the engine cylinders?

Which of the following best describes the operating principle of the vane type transfer pumps used on Bosch rotary distributor pumps?

What is used to sense control sleeve position in an EDC managed, VE injection pump?

What electrical principle is used by the injector nozzle valve motion sensors (NVMS) in Bosch VE fuel systems?

Technician A says that when an EDC-VE injection pump is used to fuel a four cylinder engine, four pumping plungers are used. Technician B says that EDC-VE pump plungers are actuated mechanically in the same way as the hydromechanical version. Who is right?

Which of the following will have most influence on the internal pump pressure of a Bosch EDC-VE injection pump?

What is used to control plunger effective stroke in a sleeve metering, rotary distributor pump?

A Bosch sleeve metering, rotary distributor pump fueled engine performs well at rated speed and load, but smokes under load at peak torque rpms. Which of the following might help correct this problem?

Technician A says that EDC VE distributor pump fuel systems use hydraulically-actuated injector nozzles. Technician B says that EDC VE fuel systems use nozzle valves equipped with nozzle valve motion sensors (NVMS) . Who is correct?

If the fuel quantity actuator fails is a Bosch EDC controlled VE injection pump, which of the following would be the likely result?

What is used to lubricate the internal components of a Bosch sleeve-metering, rotary injection pump?

Technician A says that the fuel shutdown device used on Bosch sleeve metering, rotary distributor pumps is known as ELAB. echnician B says that Bosch fuel shutdown solenoids latch when energized, preventing unwanted shutdown in the event of a loss of electrical power. Who is right?

What controls injected fuel quantity in an EDC managed, VE injection pump?

Technician A says that a Bosch EDC controlled VE injection pump is a partial authority fuel management system. Technician B says that the EDC version of a Bosch VE pump continues to use a hydromechanical governor. Who is right?