Worksheets172 Engines L3
Total questions: 10
Worksheet time: 5mins
What is the maximum fuel pressure of a CI common rail engine?
3 BAR
180 BAR
1800 PSI
2500 BAR
What is likened to the LT of a SI system on a CI fuel system?
Lift pump
Timing pump
Low tension diesel
Spill return
Why is there a spill return on a CI engine?
Reduces pressure in rail
It enables flame spread
Lubricates fuel system
Diverts to filter
What is so good about Piezo-electric injectors?
They do not require high pressure
They do not require pump
They do not need filter
They can give multiple injections
What is the exhaust part that reduces soot from a diesel engine?
DPF
SCR
Catalyst
Which converter is at front?
Oxidisation converter
Reduction converter
DPF
Knock sensor
What harmful gas does the reduction converter convert?
Oxides of nitrogen
Nitrogen oxides
Carbon monoxide
Nitrogen
Catalytic converters work at what temperature?
300°F
300°C
180°C
1800°C
What does a Lambda sensor measure?
Oxygen
Hydrocarbons
Carbon
Nitrogen
What is the correct mixture (Stoichiometric) value?
14.7 parts fuel to 1 part air
14 parts fuel to 1.7 parts air
14.7 parts air to 1 part fuel
14.7 parts nitrogen to 1 part oxygen
