Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Piston Engines 2 > Fuel Injection System > Flashcards

Fuel Injection System Flashcards

1
Q

How does the fuel injection system work?

A

Measures the volume of air flowing into the engine to determine the amount of fuel -uses RPM

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are the 4 basic components to the fuel injection system?

A

Engine Driven Injector Pump (Usually Vane type)

Fuel/Air Control Unit

Fuel Manifold Valve

Injector Nozzles

Boost Pump (For startup, and as an aux pump)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

In a turbocharged fuel injection system, what is different?

A

No manually adjusted variable orafice

there is an Aneroid assembly exposed to the upper deck

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

T or F: In the Fuel Air Control Unit, there is a venturi

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the advantage of a fuel injection system over a carb and pressure carb?

A

Even distribution and continuos flow of metered fuel

Positive shutoff during idle cutoff

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What type of injector nozzle has a filter screen and a steel shroud?

A

Normally Aspirated Nozzle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Where does fuel and air mix?

A

Inlet of the Intake Valve Port

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What will an absolute pressure gauge read at sea level?

A

14.7 psi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What will gauge pressure be at sea level?

A

0 psi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

WHAT IS THE 4 STROKE PRINCIPLE?

A

INTAKE, COMPRESSION, POWER, EXHAUST

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

DURING A COMPRESSION TEST, WHAT CONDITION AND POSITION SHOULD THE ENGINE BE IN?

A

Oil warm for sealing TDC compression

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

HOW DO THE SHOWER OF SPARKS OPERATE AND TURN OFF?

A

START SWITCH GROUNDS NORMAL BREAKERS AND ACTIVATES RETARD BREAKERS FOR STARTING (TO DELAY KICKBACK)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

DURING A COMPRESS. TEST, IF THERE’S HISSING IN THE BREATHER TUBE / CRANKCASE VENT, WHERE IS THE LEAK LIKELY?

A

PISTON RINGS, PISTON, COULD ALSO BE COLD OIL

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

DURING A COMPRESS. TEST, IF THERE’S HISSING IN THE EXHAUST, WHERE IS LIKELY THE LEAK?

A

VALVE (HYD LIFTERS USE OIL FOR ZERO CLEARANCE ON VALVE TIP AT OPERATING TEMP), VALVE SEAT

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

WHAT CONNECTS THE PISTON TO THE CRANKSHAFT

A

CONNECTING ROD (CONVERTS LINEAR MOTION TO ROTARY)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

WHAT IS THE MOST COMMON OIL PUMP?

A

CONSTANT DISPLACEMENT GEAR PUMP

17
Q

WHAT IS A METHOD OF REDUCING VISCOSITY UPON SHUTDOWN TO ALLOW FOR EASIER STARTS IN COLD WEATHER CONDITIONS?

A

OIL DILUTION

18
Q

WHICH IS HIGHER VISCOSITY? SAE50 OR SAE100?

A

SAE100

19
Q

WHAT DOES THE BOLDED PART MEAN?

W20W50

A

ASHLESS DISPERSENT ADDITIVE

20
Q

WHAT DOES THE BOLDED PART MEAN?

W20W50

A

20 VISCOSITY FOR LOW TEMPERATURE OPERATIONS

21
Q

WHAT DOES THE BOLDED PART MEAN?

W20W50

A

WINTER GRADE

22
Q

W20W50

A

VISCOSITY AT HIGH TEMPERATURE OPERATIONS/OPERATING TEMP

23
Q

WHAT DOES A VERNOTHERM DO?

A

PREVENTS OIL FROM ENTERING THE OIL COOLER ON STARTUP, UNTIL OIL HEATS UP

24
Q

WHAT DOES A BACK SUCTION MIXTURE CONTROL DO?

A

CHANGES AMOUNT OF FUEL BASED ON AIR DENSITY

SEALED BELLOWS REACTS TO ARMOSPHERIC AIR PRESSURE CHANGES TO DRIVE THE VARIABLE ORAFICE

RICHENS AT LOW ALTITUDE

LEANS AT HIGHER ALTITUDE

25
Q

WHERE IS THE MAIN DISCHARGE NOZZLE IN A CARBURETOR?

A

IN THE THINNEST POINT OF THE VENTURI

26
Q

WHAT CONTROLS THE MIXTURE OF THE FUEL AT IDLE?

A

IDLE MIXTURE SCREW/IDLE CIRCUIT

27
Q

TO CHECK IDLE MIXTURE, WHAT SHOULD YOU LOOK FOR?

A

AN INCREASE IN 25-50 RPM DURING IDLE CUTOFF (CORRECT STOICHIOMETRIC RATIO)

28
Q

WHAT CONTROLS FUEL FLOW IN FRONT OF THE FLOAT BOWL?

A

FLOAT AND NEEDLE SEAT

29
Q

IF THE NEEDLE DOES NOT SEAT, WHAT WILL HAPPEN?

A

OVER-RICH MIXTURE

30
Q

WHERE IS THE MAIN DISCHARGE NOZZLE LOCATED ON A PRESSURE CARBURETOR?

A

DOWNSTREAM OF THE VENTURI TO PREVENT CARB ICING

31
Q

WHAT KIND OF SYSTEM IS THE CONTINENTAL FUEL INJECTION SYSTEM?

A

CONTINUOUS FLOW VIA FUEL METERING UNIT

USES A ROTARY VANE PUMP

32
Q

ON THE CONTINENTAL SYSTEM, HOW IS FUEL USED FOR STARTING?

A

BOOST PUMP BYPASSES EDP ON STARTUP OVERCOMES SPRING PRESSURE THAT IS ON VALVE, SENDS FUEL TO EACH DISCHARGE NOZZLE EQUALLY

Piston Engines 2 (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions