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The function of the capacitor in the conventional ignition system is , a ) Directing the high voltage to the correct spark plug. b )
The function of the capacitor in the conventional ignition system is
a Directing the high voltage to the correct spark plug.
b To accelerate the decrease of the current in the primary circuit.
c To create induction within the induction coil.
d To ensure the formation of a strong arc between the platinum tips.
e Keeping the battery fully charged while the engine is running.
The acceleration pump inside the carburetor is designed not to operate at maximum economy. TRUE or FALSE
Restricted air bleeding system is used to obtain maximum power at maximum gas. TRUE or FALSE
Temperature and pressure sensors are used to control fuel flow in electronic fuel injection systems of spark ignition engines.
TRUE or FALSE
Centrifugal or vacuum advance mechanisms are used in the electronic ignition systems of spark ignition engines. TRUE or
FALSE
Real engine and airfuel cycle have different compression ratios.TRUE or FALSE
There is no idle jet in double throat carburetors. TRUE or FALSE
Which of the following statements is incorrect?
a As the load of the spark ignition engine increases, the volumetric ratio of carbon monoxide in the exhaust gas increases.
b The nearsurface boundary layer is one of the sources of hydrocarbon emissions.
c Carbon dioxide emissions from internal combustion engines are one of the reasons for the "greenhouse" effect.
d Exhaust gas recirculation is done to reduce carbon monoxide emissions.
e It is possible to reduce nitric oxide emissions by reducing the compression ratio.
The function of platinum is to ensure that the magnetic field collapses by cutting off the current in the primary circuit of the
conventional ignition system. TRUE or FALSE
The helical cavity on the pusher piston in the sequential fuel injection pump of diesel engines is used to lubricate the piston.
TRUE or FALSE
Instead of physically cutting off the current in the electronic ignition circuit, the current in the primary circuit is cut off by a
transistor. TRUE or FALSE
If the platinum tips are oxidized, the capacitor in the conventional ignition circuit will not be fully charged. TRUE or FALSE
If transistor controlled magnetic mist ignition system is used;
a The fuel injection system must use a singlehole injector nozzle.
b The carburetor has an extra choke butterfly valve.
c The distributor does not need an automatic advance mechanism.
d There is no platinum inside the distributor.
e Capacitive type spark plug must be used.
Distributor type fuel pump is used in fuel injection systems of locomotives. TRUE or FALSE
In modern engines, a catalytic oxidation filter is used to reduce nitric oxides coming out of the exhaust pipe. TRUE or FALSE
Carburetors used for fuel supply in diesel engines have double throats to obtain maximum power. TRUE or FALSE
In spark ignition engines, fuel supply first started with multipoint injection and then singlepoint injection systems were
used. TRUE or FALSE
The fuelair ratio of a combustible mixture is between and TRUE or FALSE
The airfuel ratio of a flammable mixture is between and TRUE or FALSE
If the equivalence ratio f of the airfuel mixture is greater than one, a lean mixture is given to the engine. TRUE or FALSE
In spark ignition engines, the equivalence ratio f of the airfuel mixture during idle operation is greater than one.
TRUE or FALSE
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