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autoshop 1-2
fuel injection
19
Automotive
Beginner
12/07/2015

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Cards

Term
purpose of fuel injector?
Definition
dispense fuel to cylinder
Term
3 main determinants of load?
Definition
MAP, MAF, TPS
Term
fuel rail pressure?
Definition
32-38 psi
Term
what is TPS?
Definition
throttle position sensor
Term
MAF Sensor?
Definition
measures air intake and delivers fuel
Term
what is WOT?
Definition
Wide Open Throttle
Term
what is OBD?
Definition
On Board Diognostics
Term
what are the two OBD?
Definition
OBD I <'96 ; OBD II >'96
Term
3 wires out of TPS?
Definition
5voltDC; AjustedReturnVoltage;Ground
Term
how much Hg in intake manifold?
Definition
18-22inches
Term
voltage range b/w idle& WOT?
Definition
idle: .6v WOT: 4-5v
Term
O2 sensor measures if car is what?
Definition
running lean(little gas) or rich(lots of gas)
Term
what does the crankshaft position sensor do?
Definition
indicates when #1 piston nears TDC on compression stroke
Term
use of water temp. sensor?
Definition
works: temp gauge, cooling fan,Fuel mixture, O2 sensor, trans operation
Term
what is open and closed loop?
Definition
open loop= car is too cold; closed loop = car is at operating temp.
Term
what is operating temperature?
Definition
195 F
Term
where do we hook up the scan tool?
Definition
ALDL (data port)
Term
use of intake air temp. sensor
Definition
measures intake air temp
Term
whay does the VSS do?
Definition
generates a voltage signal to vehicals speed
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