Four-Stroke Engine: Fuel System ICEV Test Exam
Questions And Answers Verified 100% Correct
The engine control unit uses information received from various ________
to determine the correct amount of ____ and injection timing based on
load, ________ and operator input.
The engine control unit uses information received from various sensors to
determine the correct amount of fuel and injection timing based on load,
Temp. and operator input. what sensor only functions after warming up to
the operating temperature?
ANSWER Oxygen sensor
Where can the oxygen sensor be installed?
ANSWER Muffler or exhaust manifold
Which sensors allows the ECY to increase or decrease the fuel mixture and
spark timing to adjust for deceleration, acceleration and changes in load?
ANSWER Throttle position (TPS) sensor
Which sensors provides the ECU with a signal for determining engine load?
ANSWER Manifold absolute pressure (MAP) sensor function of: inlet
needle
ANSWER Allows fuel to enter the float bowl as it is consumed by the
engine function of: Fuel supply inlet
ANSWER Where fuel enters the carburetor from the fuel/engine's tank
function of: Float assembly
ANSWER Controls the level of fuel in the bowl
function of: fuel bowl vent
, ANSWER Maintains the air pressure at atmospheric levels
function of: pickup tube
ANSWER Delivers fuel to the throat of the carburetor
function of: fuel bowl
Holds fuel for use by different metering circuits
Put the steps of the "shaker test" in order.
1. shake vigorously
2. let solution sit for 3-5 mins
3. add water to the 1st mark from the bottom
4.read alcohol % level
5. Add fuel to the top mark
ANSWER 3,5,1,2,4
Ethanol is ____________ oxygen.
ANSWER 37.6 percent
How can fuel become oxidized?
ANSWER Exceeding its shelf life
Which of the following is the optimum air/fuel ratio for a gasoline engine?
ANSWER 14.7:1
EFI is the acronym for ?
ANSWER Electronic Fuel Injection
Regulated fuel lines emit how many grams of hydrocarbons per day?
ANSWER 15
Altering the air/fuel ration due to an increase in alcohol is known as
ANSWER Enleanment
Questions And Answers Verified 100% Correct
The engine control unit uses information received from various ________
to determine the correct amount of ____ and injection timing based on
load, ________ and operator input.
The engine control unit uses information received from various sensors to
determine the correct amount of fuel and injection timing based on load,
Temp. and operator input. what sensor only functions after warming up to
the operating temperature?
ANSWER Oxygen sensor
Where can the oxygen sensor be installed?
ANSWER Muffler or exhaust manifold
Which sensors allows the ECY to increase or decrease the fuel mixture and
spark timing to adjust for deceleration, acceleration and changes in load?
ANSWER Throttle position (TPS) sensor
Which sensors provides the ECU with a signal for determining engine load?
ANSWER Manifold absolute pressure (MAP) sensor function of: inlet
needle
ANSWER Allows fuel to enter the float bowl as it is consumed by the
engine function of: Fuel supply inlet
ANSWER Where fuel enters the carburetor from the fuel/engine's tank
function of: Float assembly
ANSWER Controls the level of fuel in the bowl
function of: fuel bowl vent
, ANSWER Maintains the air pressure at atmospheric levels
function of: pickup tube
ANSWER Delivers fuel to the throat of the carburetor
function of: fuel bowl
Holds fuel for use by different metering circuits
Put the steps of the "shaker test" in order.
1. shake vigorously
2. let solution sit for 3-5 mins
3. add water to the 1st mark from the bottom
4.read alcohol % level
5. Add fuel to the top mark
ANSWER 3,5,1,2,4
Ethanol is ____________ oxygen.
ANSWER 37.6 percent
How can fuel become oxidized?
ANSWER Exceeding its shelf life
Which of the following is the optimum air/fuel ratio for a gasoline engine?
ANSWER 14.7:1
EFI is the acronym for ?
ANSWER Electronic Fuel Injection
Regulated fuel lines emit how many grams of hydrocarbons per day?
ANSWER 15
Altering the air/fuel ration due to an increase in alcohol is known as
ANSWER Enleanment
