Alternate Fuel System

Propane tanks are filled to:

60% of their capacity

80% of their capacity

95% of their capacity

100% of their capacity

Correct! Wrong!

Converter freeze up may be caused by:

low coolant level

low coolant temperature

incorrect warm up

all of the above

Correct! Wrong!

Which device relieves excess tank pressure on a propane system?

80% fill valve

fill valve

excess flow valve

pressure relief valve

Correct! Wrong!

Which device cuts off flow of fuel if the supply line is broken?

80% fill valve

pressure relief valve

excess flow valve

service valve

Correct! Wrong!

On an LPG system which device is incorporated with the main fuel supply (service) valve from the tank?

80% valve

fill valve

excess flow valve

lockoff valve

Correct! Wrong!

In the case where the propane tank service valve is shut off and the engine is stopped, excess pressure may develop in the line between the fuel lock off valve and the service valve. Which valve relieves this pressure?

pressure relief valve

hydrostatic relief valve

excess flow valve

double back check valve

Correct! Wrong!

Two advantages to using propane fuel over gasoline are lower fuel cost and cleaner burning fuel, which also results in lower overall maintenance costs.

True

False

Correct! Wrong!

Any licensed and experienced mechanic can install and service a propane fuel system.

True

False

Correct! Wrong!

The device which prevents propane from gathering inside the vehicle or escaping to the atmosphere when the engine is shut down is the:

fuel lock valve

converter

outage valve

relief valve

Correct! Wrong!

The device which reduces the pressure of the propane before it reaches the engine is the:

fuel lock valve

converter

outage valve

relief valve

Correct! Wrong!

The fuel gauge sender in a propane system operates with a completely different wire harness from the fuel gauge in a gasoline system.

True

False

Correct! Wrong!

An important consideration that a technician will check for when converting a vehicle to an alternate fuel is:

crankshaft modifications

cylinder compression

vacuum levels

cooling system abiity

Correct! Wrong!

A specialized refueling interlock system is used with all alternate fuel conversions and are installed onto the vehicle to:

prevent filling with the wrong fuel

prevent engine operation while fueling

allow both tanks to fill equally

prevent over-fueling

Correct! Wrong!

When servicing or fueling an alternate fuel vehicle, you should always check to see if:

there is a current alternate fuel decal on the vehicle

the ignition system is in good operating order

all electrical devices are in place

the vehicle operates properly

Correct! Wrong!

In order to repair an alternate fuel system in British Columbia, all technicians must be certified by the Gas Inspection Branch.

True

False

Correct! Wrong!

In an LPG fuel system, the _____________ is required to change the state of the liquid fuel to a vapour.

filter/fuel interlock

carburettor

converter

intake manifold

Correct! Wrong!

Propane in the gaseous state is approximately:

1.5 times heavier than air

the same weight as air

lighter than air

2.5 times heavier than air

Correct! Wrong!

Propane fuel, as used for vehicle operation is:

stored as a vapour and burned as a liquid.

stored as a liquid and burned as a vapour.

stored as a liquid and burned as a liquid.

stored as a vapour and burned as a vapour.

Correct! Wrong!

L.P.G. (liquid petroleum gas) is heavier than air.

True

False

Correct! Wrong!

L.P.G. is stored in tanks and approx. 3000 p.s.i.

True

False

Correct! Wrong!

Natural Gas is:

heavier than air

lighter than air

the same weight as air

Correct! Wrong!

Natural gas storage tanks are the same as propane.

True

False

Correct! Wrong!

Converting and running a high compression diesel engine (eg. 18:1) on natural gas may result in severe detonation.

True

False

Correct! Wrong!

Natural gas fuel systems use a system that has:

a built -in converter

two stages of regulation

three stages of regulation

an indicator valve

Correct! Wrong!

The amount of fuel mixture which enters the engine on a natural gas system is determined by:

the position of the regulator

the size of the mixer

the pressure in the tank

the amount of engine intake air vacuum

Correct! Wrong!

Alternate Fuel System

Propane tanks are filled to:

Converter freeze up may be caused by:

Which device relieves excess tank pressure on a propane system?

Which device cuts off flow of fuel if the supply line is broken?

On an LPG system which device is incorporated with the main fuel supply (service) valve from the tank?

In the case where the propane tank service valve is shut off and the engine is stopped, excess pressure may develop in the line between the fuel lock off valve and the service valve. Which valve relieves this pressure?

Two advantages to using propane fuel over gasoline are lower fuel cost and cleaner burning fuel, which also results in lower overall maintenance costs.

Any licensed and experienced mechanic can install and service a propane fuel system.

The device which prevents propane from gathering inside the vehicle or escaping to the atmosphere when the engine is shut down is the:

The device which reduces the pressure of the propane before it reaches the engine is the:

The fuel gauge sender in a propane system operates with a completely different wire harness from the fuel gauge in a gasoline system.

An important consideration that a technician will check for when converting a vehicle to an alternate fuel is:

A specialized refueling interlock system is used with all alternate fuel conversions and are installed onto the vehicle to:

When servicing or fueling an alternate fuel vehicle, you should always check to see if:

In order to repair an alternate fuel system in British Columbia, all technicians must be certified by the Gas Inspection Branch.

In an LPG fuel system, the _____________ is required to change the state of the liquid fuel to a vapour.

Propane in the gaseous state is approximately:

Propane fuel, as used for vehicle operation is:

L.P.G. (liquid petroleum gas) is heavier than air.

L.P.G. is stored in tanks and approx. 3000 p.s.i.

Natural Gas is:

Natural gas storage tanks are the same as propane.

Converting and running a high compression diesel engine (eg. 18:1) on natural gas may result in severe detonation.

Natural gas fuel systems use a system that has:

The amount of fuel mixture which enters the engine on a natural gas system is determined by:

Success!

Heavy-Duty Mechanic - Trucks & Equipment