More Related Content Similar to MPFI system (20) 3. ,[XGGF C[T]VM:
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25. ,FdA0F ;[g;Z o
Heating element
Protective tube
Connecting
cable
Shell
Disc spring
Electric contacts
Supporting
ceramic tube
ZrO2 sensor ceramics
27. Lambda sensors - basic types
„LS“
0 258 001 xxx
Non-heated sensors (finger type λ = 1)
0 258 002 xxx
„LSH“
0 258 003 xxx
Heated sensors (finger type λ = 1)
0 258 005 xxx
„LSM“
0 258 104 xxx
Heated sensors (finger type λ > 1)
„LSF“
0 258 006 xxx
Heated sensors (planar type λ = 1)
„LSU“
0 258 007 xxx
Heated sensors (universal planar type, variable λ)
28. Gasoline direct injection Motronic MED 7
High-pressure
pump
Air-mass meter with
air temperature sensor
Electroni
c throttle
control
ETC
Electronic
control unit
MAP sensor
Fuel rail
Ignition coil
Pressure
control valve
Injectors
Pressure
sensor
Exhaust-gas
recirculation
valve
Lambdasensor (LSU)
NOxcatalytic
converter
In-tank module
including the
fuel-supply pump
Lambda
sensor (LSF)
29. Engine idle with wide open throttle
plate and low rpm
Stratified charge makes lean fuel-air
mixture up to approx. λ = 8 possible
Up to 20% reduced fuel consumption
compared with manifold injection
position
Throttle plate
Partial load with wide open throttle
plate (stratified charge)
Lambda ratio
Compression ratio up to approx.
ε = 17 possible
Engine torque
Gasoline Direct Injection
Stratified charge
Homogeneous charge
WOT
λ=1
0
Accelerator pedal position
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