WorksheetsMak electronic fuel injection system EFI
Total questions: 25
Worksheet time: 25mins
The sensor which is being used for measuring the engine load
Manifold absolute pressure sensor
Crankshaft position sensor
Camshaft position sensor
None of these
In Spark ignition direct injection the injector is fixed
In the piston
In the cylinder head
In the crankshaft
In the camshaft
Which sensor is used for monitoring the air fuel ratio
Exhaust gas oxygen sensor
Camshaft position sensor
Manifold absolute pressure sensor
Crankshaft position sensor
Which sensor is used for measuring the mass of the filtered air flowing to the engine
Oxygen sensor
Camshaft position sensor
Mass air flow sensor
Crankshaft position sensor
Where is the oxygen sensor fixed
In the intake manifold
In the exhaust manifold
In the injector
In the cylinder head
What does efficient combustion depend upon
On the amount of oxygen in the exhaust gas
On the amount of nitrogen in the exhaust gas
On the movement of the piston
None of these
The main pollutant generated during the operation of engine is
Nitrogen
Hydrocarbon
Carbon monoxide
All of these
Another name for the oxygen sensor is
Lambda sensor
Throttle position sensor
Crankshaft
None of these
The subsystem of the EFI system is
Fuel supply system
Air intake system
Electronic control unit
All of these
The amount and timing of the spraying of the fuel by the injector is regulated by
ECU
Fuel pump
Fuel filter
Pressure regulator
Which of these is a component of a multi point EFI system
Fuel tank
Fuel rail
Injector
All of these
The fuel tank of a passenger car is made of
Steel
Aluminium
Cast iron
Copper
Another name for fuel supply line is
Fuel return line
Vapour line
Fuel delivery line
None of these
Where is the pressure regulator located
At the end of the fuel rail
In front of the fuel rail
Behind the fuel rail
In the middle of the fuel rail
What is the function of tachometer
To measure the speed of the engine
Two measure the load of the engine
To measure the amount of fuel entering into the engine
None of these
Which sensor is used for measuring the temperature of air entering the engine
Intake air temperature sensor
Mass air flow sensor
Throttle position sensor
Crankshaft sensor
Where is the intake air temperature sensor installed
In the intake manifold
On the exhaust manifold
In the exhaust valve
In the silencer
MAP sensor measure the supply of
Atmospheric pressure in the manifold
Absolute pressure in the manifold
Temperature in the manifold
Vacuum in the manifold
MPFI means
Multi-port fuel injector
Multi point fuel injection
Multi petrol fuel injection
Multi pressure fuel injection
Which is a controlled device for the electrical and electronics section of MPFI engine
IAT
MAP
CTS
ECM
Which sensor is located in engine block
Oxygen sensor
TPS sensor
Knock sensor
MAP sensor
Which one locates the inlet manifold sensor
IAT sensor
MAP sensor
CTS Sensor
Knock sensor
The main advantage of electronic fuel injection system is
High quality fuel distribution
Less fuel consumption
Rapid response of the engine to throttle control
All of these
In EFI system the the inlet manifold pressure sensor senses the
Quantity of air in the inlet manifold
Vacuum in the inlet manifold
Quantity of fuel supplied in the inlet manifold
None of these
For cold starting of EFI system engine, what is the arrangement for providing rich mixture
A separate injector is fitted to the inlet manifold
Exhaust valve lifter arrangement
Lean mixture send through injector
None of these
