Question 1

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

Accepted Answer

A)  control sleeve 
B)  plunger dimension 
C)  engine rpm 
D)  cam plate 
A)  control sleeve 
B)  plunger dimension 
C)  engine rpm 
D)  cam plate D

Question 2

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?

Accepted Answer

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

Question 3

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

Accepted Answer

A)  control sleeve 
B)  cam plate 
C)  metering pressure 
D)  engine rpm 
A)  control sleeve 
B)  cam plate 
C)  metering pressure 
D)  engine rpm A

Question 4

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?

Accepted Answer

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

Question 5

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

Accepted Answer

A)  Two 
B)  Four 
C)  Six 
D)  Eight 
A)  Two 
B)  Four 
C)  Six 
D)  Eight

Question 6

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

Accepted Answer

A)  piezoelecticity 
B)  induction 
C)  potentiometer 
D)  Hall-effect 
A)  piezoelecticity 
B)  induction 
C)  potentiometer 
D)  Hall-effect

Question 7

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

Accepted Answer

A)  centrifugal 
B)  constant velocity 
C)  variable cycle 
D)  positive displacement 
A)  centrifugal 
B)  constant velocity 
C)  variable cycle 
D)  positive displacement

Question 8

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

Accepted Answer

A)  fuel 
B)  engine oil from engine lubrication circuit 
C)  dedicated supply of engine oil 
D)  dry sump 
A)  fuel 
B)  engine oil from engine lubrication circuit 
C)  dedicated supply of engine oil 
D)  dry sump

Question 9

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?

Accepted Answer

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

Question 10

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

Accepted Answer

A)  NVMS 
B)  start of injection solenoid 
C)  control sleeve solenoid 
D)  cam lift dimension 
A)  NVMS 
B)  start of injection solenoid 
C)  control sleeve solenoid 
D)  cam lift dimension

Question 11

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?

Accepted Answer

A)  One 
B)  Two 
C)  Three 
D)  Six 
A)  One 
B)  Two 
C)  Three 
D)  Six

Question 12

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?

Accepted Answer

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

Question 13

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

Accepted Answer

A)  six 
B)  four 
C)  two 
D)  one 
A)  six 
B)  four 
C)  two 
D)  one

Question 14

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

Accepted Answer

A)  engine derate 
B)  limp home mode operation 
C)  engine shutdown 
D)  no performance impact 
A)  engine derate 
B)  limp home mode operation 
C)  engine shutdown 
D)  no performance impact

Question 15

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?

Accepted Answer

A)  positive torque control 
B)  negative torque control 
C)  derate high idle speed 
D)  use fuel with higher CN 
A)  positive torque control 
B)  negative torque control 
C)  derate high idle speed 
D)  use fuel with higher CN

Question 16

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

Accepted Answer

A)  Engine rpm 
B)  Potentiometer 
C)  Hall effect sensor 
D)  Rheostat 
A)  Engine rpm 
B)  Potentiometer 
C)  Hall effect sensor 
D)  Rheostat

Question 17

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?

Accepted Answer

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

Question 18

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

Accepted Answer

A)  set screws 
B)  interference fit 
C)  a pin 
D)  weld 
A)  set screws 
B)  interference fit 
C)  a pin 
D)  weld

Question 19

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

Accepted Answer

A)  Control sleeve position 
B)  ECM control valve 
C)  Throttle angle 
D)  Engine rpm 
A)  Control sleeve position 
B)  ECM control valve 
C)  Throttle angle 
D)  Engine rpm

Question 20

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?

Accepted Answer

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

Exam 24: Sleeve-Metering Rotary Distributor Pumps

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

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?

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

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?

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

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

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 lubricate the internal components of a Bosch sleeve-metering, rotary injection pump?

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?

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

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?

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

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

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?

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

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

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

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