Actuator Solenoid

the solenoid in the actuator housing on the back of the injection pump which moves the control rack as commanded by the engine controller.

Ambient Temperature

the temperature of the surrounding medium such as gas air or liquid which comes into contact with a particular component.


an instrument for measuring the flow of electrical current in amperes. ammeters are always connected in series with the circuit to be tested.


a unit of measure for the flow of current in a circuit. one ampere is the amount of current flow provided when one volt of electrical pressure is applied against one ohm of resistance. the ampere is used to measure electricity much as “gallons per minute” is used to measure water flow.


a unit of measure for battery capacity. it is obtained by multiplying the current (in amperes) by the time (in hours) during which current flows. for example a battery which provides 5 amperes for 20 hours is said to deliver 100 ampere hours.


a device of electronic components used to increase power voltage or current of a signal.


a term used to describe the maximum value of a pulse or wave. it is the crest value measured from zero. or lntegrated circuits composed to produce amplify or respond to variable voltages. they include many kinds of amplifiers that involve analog to digital conversions and vice versa timers and inverters. they are known as operational amplifier circuits or op amps.


a display device utilizing a varying current to cause a mechanical change in the position of its needle.