wagundo
12-05-2007, 02:59 PM
I found this so i share it lol
Omega/Vectra/AstraG Cruise Control Function
Function
When the cruise control is active, the desired vehicle speed is attained and maintained by defined actuation of the throttle valve.
To achieve precise actuation of the throttle valve, the stepper motor integrated into the housing is brought to a value calculated by the control unit.
The rotation of the engine is converted into a linear motion by gears.
A Bowden cable connects the output shaft of the transmission to the throttle valve lever.
The new cruise control has the following options:
- Constant speed,
- Accelerate,
Decelerate when coasting,
Increase / decrease current set speed in increments,
Resume last stored vehicle speed.
The "decelerate" function has not been realized for the Digital Diesel Electronics (DDE 2.1).
The three tip switches in the control switch are used to activate / deactivate the cruise control and to set the desired speed.
Once the cruise control has been initialised when the ignition is switched on, the following signals are
constantly monitored:
- Tip switch "I" "R" and "O" of control switch,
- Brake lamp switch,
- Odometer pulse from ABS control unit,
- Clutch switch (MT),
- "D" "3" "2" "1" signal from selector lever position switch (AT).
Activate cruise control:
Tip switch "0" not actuated, i.e. control switch closed,
tip switch "I" not actuated, i.e. control switch open,
tip switch "R' not actuated, i.e. control switch open,
brake lamp switch open,
vehicle speed higher than 25 km/h (15 mph) and lower than 220 kin/h (137 mph) (petrol engines only).
Clutch switch (MT) closed,
"D" "3" "2" "1" signal from selector lever position switch (AT) present.
If one of these conditions is not fulfilled, the cruise control cannot be activated.
Deactivate or automatically quit cruise control:
- Tip switch "0" of control switch open (OFF position),
- brake lamp switch closed (service brake actuated),
vehicle speed higher than 225 km/h (140 mph) or less than 16 km/h (10 mph) (petrol engines only),
clutch switch open (clutch actuated), or "D" "3" "2" "1" signal from selector lever position switch not present.
- Acceleration / deceleration greater or equal to 4.5 ms-2 (hard braking).
Petrol engines only:
When the cruise control is deactivated or quit under one of the above conditions, the serve motor returns to the 0 position.
This means that the throttle valve is no longer actuated by the servo motor.
If there is a defect, an electromagnetic safety clutch in the control unit / actuator ensures that the cruise
control is decoupled.
The AT control unit receives information about whether the cruise control is activated or not.
The tip switches can activate various cruise control functions:
I = Activate and maintain constant speed (fix):
When the "I" tip switch is actuated, the current vehicle speed is stored and maintained by the cruise control (fixed).
R = Call up memory:
When the "R" tip switch is actuated, the cruise control is activated and automatically returns the vehicle to the previously stored speed.
I =Accelerate and fix:
Regular speed increase:
- Extended actuation (longer than 0.5 second) of tip switch "I" increases the vehicle speed.
When tip switch "I' is released, the speed attained is automatically stored.
- Increase speed by 2 km/h (1.25 mph):
Brief actuation (not longer than 0.5 second) of tip switch "I" increases the vehicle speed by 2 km/h (1.25 mph).
The speed attained is then automatically stored.
R = Decelerate and fix (petrol engines only):
Regular reduction of speed:
- Extended actuation (longer than 0.5 sec. ) of tip switch "R" reduces the vehicle speed.
When tip switch "R" is released, the speed attained is automatically stored.
Decrease speed by 2 km/h (1.25 mph):
- Brief actuation (not longer than 0.5 sec. ) of tip switch "R" decreases the vehicle speed by 2 km/h (1.25 mph).
The speed attained is then automatically stored.
O = Deactivate:
The cruise control is deactivated when tip switch "0" is actuated.
Omega/Vectra/AstraG Cruise Control Function
Function
When the cruise control is active, the desired vehicle speed is attained and maintained by defined actuation of the throttle valve.
To achieve precise actuation of the throttle valve, the stepper motor integrated into the housing is brought to a value calculated by the control unit.
The rotation of the engine is converted into a linear motion by gears.
A Bowden cable connects the output shaft of the transmission to the throttle valve lever.
The new cruise control has the following options:
- Constant speed,
- Accelerate,
Decelerate when coasting,
Increase / decrease current set speed in increments,
Resume last stored vehicle speed.
The "decelerate" function has not been realized for the Digital Diesel Electronics (DDE 2.1).
The three tip switches in the control switch are used to activate / deactivate the cruise control and to set the desired speed.
Once the cruise control has been initialised when the ignition is switched on, the following signals are
constantly monitored:
- Tip switch "I" "R" and "O" of control switch,
- Brake lamp switch,
- Odometer pulse from ABS control unit,
- Clutch switch (MT),
- "D" "3" "2" "1" signal from selector lever position switch (AT).
Activate cruise control:
Tip switch "0" not actuated, i.e. control switch closed,
tip switch "I" not actuated, i.e. control switch open,
tip switch "R' not actuated, i.e. control switch open,
brake lamp switch open,
vehicle speed higher than 25 km/h (15 mph) and lower than 220 kin/h (137 mph) (petrol engines only).
Clutch switch (MT) closed,
"D" "3" "2" "1" signal from selector lever position switch (AT) present.
If one of these conditions is not fulfilled, the cruise control cannot be activated.
Deactivate or automatically quit cruise control:
- Tip switch "0" of control switch open (OFF position),
- brake lamp switch closed (service brake actuated),
vehicle speed higher than 225 km/h (140 mph) or less than 16 km/h (10 mph) (petrol engines only),
clutch switch open (clutch actuated), or "D" "3" "2" "1" signal from selector lever position switch not present.
- Acceleration / deceleration greater or equal to 4.5 ms-2 (hard braking).
Petrol engines only:
When the cruise control is deactivated or quit under one of the above conditions, the serve motor returns to the 0 position.
This means that the throttle valve is no longer actuated by the servo motor.
If there is a defect, an electromagnetic safety clutch in the control unit / actuator ensures that the cruise
control is decoupled.
The AT control unit receives information about whether the cruise control is activated or not.
The tip switches can activate various cruise control functions:
I = Activate and maintain constant speed (fix):
When the "I" tip switch is actuated, the current vehicle speed is stored and maintained by the cruise control (fixed).
R = Call up memory:
When the "R" tip switch is actuated, the cruise control is activated and automatically returns the vehicle to the previously stored speed.
I =Accelerate and fix:
Regular speed increase:
- Extended actuation (longer than 0.5 second) of tip switch "I" increases the vehicle speed.
When tip switch "I' is released, the speed attained is automatically stored.
- Increase speed by 2 km/h (1.25 mph):
Brief actuation (not longer than 0.5 second) of tip switch "I" increases the vehicle speed by 2 km/h (1.25 mph).
The speed attained is then automatically stored.
R = Decelerate and fix (petrol engines only):
Regular reduction of speed:
- Extended actuation (longer than 0.5 sec. ) of tip switch "R" reduces the vehicle speed.
When tip switch "R" is released, the speed attained is automatically stored.
Decrease speed by 2 km/h (1.25 mph):
- Brief actuation (not longer than 0.5 sec. ) of tip switch "R" decreases the vehicle speed by 2 km/h (1.25 mph).
The speed attained is then automatically stored.
O = Deactivate:
The cruise control is deactivated when tip switch "0" is actuated.