Description - function: engine ECU VALEO V46 Peugeot 2008 I

Description

(1) Engine management ECU

"a" 53-way brown connector

"b" 53-way black connector

"c" 32-way grey connector

Supplier: VALEO

Role

The engine ECU manages the fuel injection on the basis of the information on engine torque

• The engine ECU calculates the need for engine torque from data from the accelerator pedal sensor
• The requested engine torque takes into account various corrections (torque absorbed by the alternator, torque absorbed by the refrigeration compressor, etc)
• The engine torque request converts into a fuel injection time, a fuel injection phasing, a command to open the throttle unit and an ignition advance

The engine ECU manages the ignition as well as the injection of the fuel, as a function of the different parameters received

• Engine speed
• Position of the crankshaft
• Inlet air pressure (Pressure sensor)
• Position of the accelerator pedal
• Temperature of the air entering the cylinders (air temperature sensor)
• Engine coolant temperature
• Torque absorbed by the alternator
• Torque absorbed by the aircon compressor (calculation)
• Vehicle speed (vehicle speed sensor; speed information provided by the ESP ECU)
• Oxygen content in the exhaust gases (oxygen sensor)
• Engine knock (knock detector)
• Air conditioning request
• Pressure in the power steering circuit

Using this information, the engine ECU operates the following commands

• Opening of the motorised throttle unit
• Adjustment of idling speed
• Ignition advance and coil charging time
• Quantity of petrol injected, proportional to the injectors opening time
• Petrol vapours recirculation (canister bleed electrovalve)
• Cutting of the injection in overload and deceleration
• Air conditioning cut-off
• Oxygen sensor heating resistor (upstream and downstream oxygen sensors)

The engine ECU controls also the following functions

• Reduction of engine torque during an activation of the ESP
• The engine cooling
• The cooling requirement for the air conditioning (BRAC)
• The dialogue with other ECUs (BSI, ABS,...) via the CAN (*)
• Check functionalities of injection and pollution control
• Driving improvement strategies
• Engine immobiliser function
• Emergency strategies
• Fan unit and warning lamp operating management
• The diagnostic with memorisation of failures
• The cruise control and speed limiter function

Electrical features

Engine ECU VALEO V46

• "a" 53-way brown connector
• "b" 53-way black connector
• "c" 32-way grey connector

Programming/initialisation

The engine management ECU software is updated by downloading (ECU fitted with a flash EPROM)