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Gasoline injection components | A43
2008 | 2009 Bosch Automotive Aftermarket
Thermo-time switch
Systems:
D, L, LH, K, KE-Jetronic, Motronic
Purpose:
The thermo-time switch limits the injection period of the cold-start valve as a function of time
and temperature. The switch consists of an electrically heated bimetallic element, which breaks
or makes a contact. Actuation is implemented by way of the ignition/starter switch.
Part number:
0 280 130 2..
Throttle-valve assembly (EMS positioner)
Systems:
Motronic with ETC
Purpose:
In engine management systems with ETC, the throttle valve is no longer adjusted directly
by way of a cable. The acceleration input is detected via a pedal-travel sensor and the sensor
signal is relayed to the electronic control unit. The signal received by the control unit is
converted into a control signal incorporating other vehicle and engine data. This control signal
opens or closes the throttle valve (driven by an electric motor) in line with the driver input
and driving situation.
Part number:
0 205 003 0.., 0 280 750 ...
Throttle-valve potentiometer, throttle-valve sensor
Systems:
Mono-Jetronic, Motronic, Mono-Motronic
Purpose:
Throttle-valve sensors are attached to the throttle-valve assembly or the central injection unit.
These sensors detect the position of the throttle valve and the angular velocity on opening and
closing. The angular velocity is an important signal for the electronic control unit to provide
compensation for load-change reactions and to prevent part-load bucking. Note: Throttle-valve
sensors at central injection units cannot be replaced. The entire bottom section of the injection
unit has to be renewed. The appropriate bottom section can be found in the replacement parts
range as of Page A 46.
Part number:
0 261 211 ..., 0 280 122 ...