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Bosch Automotive Aftermarket 2008 | 2009
A12 | Gasoline injection systems
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ME-Motronic with ETC
The principal function of the engine-man-
agement system is to set the driver’s torque
input whilst at the same time achieving
optimum fuel consumption and the lowest
possible emission level. The ME-Motronic
engine-management system combines
all the sub-systems required for this: The
electronic throttle control (EGAS) sets
the amount of air needed to generate this
torque. The corresponding fuel mass is con-
trolled in the gasoline injection sub-system
and the ignition sub-system sets the appro-
priate ignition point as well as the neces-
sary ignition energy.
In combination with other electronic sys-
tems in the vehicle, the ME-Motronic also
enhances ride comfort and user safety. If,
for example, an ABS or ESP system requires
a specific engine torque to provide vehicle
traction, the ME-Motronic sets the neces-
sary torque.
The sub-systems have become more closely
integrated in order to deal with this wide
range of engine-management tasks.
Carbon canister
Canister-purge valve
Intake-manifold pressure sensor*
Fuel rail/injector
Camshaft adjuster*
Ignition coil/spark plug
Phase sensor
Lambda Sensor
Air-mass meter
N Throttle device (ETC)
O EGR valve*
Q Speed sensor
M Knock sensor
K Temperature sensor
, Primary catalytic converter
- Lambda Sensor
I Main catalytic converter
H Accelerator-pedal module
J In-tank unit
N Electronic control unit
O CAN
Q Diagnosis lamp
M Diagnostics interface
K Immobilizer
ETC = Electronic throttle control
EOBD = European On-Board Diagnosis
System
RLFS = Non-return fuel supply system
Inlet and/or exhaust adjustment
* = optional
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Bosch components