vacuum advance control

См. также в других словарях:

• vacuum advance — A mechanism on the side of the distributor that automatically varies the instant at which the spark occurs as a function of intake manifold vacuum. Vacuum advance provides the additional advance that is needed when the engine is operating at part …   Dictionary of automotive terms

• control vacuum advance — See speed control vacuum advance …   Dictionary of automotive terms

• orifice spark advance control — (OSAC) a device used by Chrysler to apply vacuum advance over a period of time. By limiting the timing advance rate, NOx is reduced …   Dictionary of automotive terms

• speed control vacuum advance — A system which cuts off vacuum ignition advance when a car is cruising at low speeds, typically under 35 mph; for this purpose, a solenoid operated valve is hooked into the distributor advance vacuum line, which is governed by a speed dependent… …   Dictionary of automotive terms

• Vacuum switch — Prior to effective engine computers, engine vacuum was used for many functions in an automobile. Vacuum switches were employed to regulate this flow, and were commonly controlled by temperature, solenoids, mechanically, or directly. They operated …   Wikipedia

• advance — [1] The act of changing the ignition timing so that the spark occurs earlier in the cycle. The opposite is retard. [2] It may refer to the device which makes this adjustment. Also see automatic advance centrifugal advance electronic spark advance …   Dictionary of automotive terms

• vacuum delay valve — (VDV) a valve used by GM to bleed ported vacuum to the vacuum advance unit through a small orifice and control vacuum advance rate. Used to retard or delay the application of a vacuum signal. Also called delay valve …   Dictionary of automotive terms

• vacuum regulator valve three and four-port — (VRV) this type of vacuum regulator valve is used to control the vacuum advance to the distributor …   Dictionary of automotive terms

• Vacuum brake — The vacuum brake is a braking system used on trains. It was first introduced in the mid 1860s and a variant, the automatic vacuum brake system became almost universal in British train equipment, and in those countries influenced by British… …   Wikipedia

• Vacuum cleaner — Cylinder vacuum cleaner for home use. French train vacuum cleaner …   Wikipedia

• thermal ignition control — (TIC) device used by Chrysler that shifts the vacuum advance vacuum source from ported vacuum to manifold vacuum when coolant temperature exceeds 225° F …   Dictionary of automotive terms