gf0752s1010a

PEC idle speed control actuator position/task/design/function

Type gf · emne 07.52 · version 0100 · 1999-10-15

Gælder for: ENGINE 111 in MODEL 638

Ikke tilgængelig på “da”; vises på Engelsk.

Placering

Funktionsgruppe 1 Motor › 07 Blandingstilberedning › 07.52 Benzinindsprøjtnings- og tændingssystem PMS — Serie 638

Gælder også for motorer/gearkasser: 111 ***

GF07.52-S-1010A

PEC idle speed control actuator position/task/design/function

26.4.99

ENGINE 111 in MODEL 638

PEC idle speed control actuator position/task/design/function

S07.52-3023-11

Task

Controlling idle speed at different engine loads (e.g. power steering at full lock, AC compressor engaged)

Design

1 Idle speed contact switch

M33 Idle speed control actuator

PEC idle speed control actuator position/task/design/function

S07.52-3024-06

Function

Idle speed contact switch (1)

Provides the PEC control module with the information regarding adjusting lever (2) operated or not operated and is used for activating various idling and ignition maps.

Design

1 Idle speed contact switch

2 Adjusting lever

3 Freewheel

4 Throttle valve

5 Spring

6 Spring capsule

7 Actuator motor

8 Gear

9 Drive shaft

10 Spring

11 Throttle valve actual value potentiometer

12 Drive actual value potentiometer

13 Throttle valve shaft

Throttle valve actual value potentiometer (11)

Advises the PEC control module of the position of the throttle valve (4) (idling up to full load) in order to detect the various engine load states.

Drive actual value potentiometer (12)

Advises the PEC control module of the position of the input shaft (9) so that the input shaft (9) is moved into its defined position during the deceleration phase in order to limit the intake manifold vacuum.

Ignition "OFF"

In the deenergized state the position of the throttle valve is determined by the spring capsule (6).

Ignition "ON"

When the ignition is switched on, the actuator motor (7) is operated by the PEC control module and the throttle valve (4) adopts a position in line with the coolant temperature.

Idling

In the idling range the actuator motor (7) controls the engine speed by opening the throttle valve further (increased mixture) or closing it further (reduced mixture) in line with the coolant temperature and engine load.

Driving (part/full load)

When driving (part/full load) the position of the throttle valve is controlled by the adjusting lever (2) which is linked to the accelerator pedal by means of the throttle control linkage and throttle control cable. The actuator motor (7) has no function in the part/full load range.