GF07.61-P-4019KE ME-SFI Overrun Fuel Shutoff, Function

GF07.61-P-4019KE ME-SFI Overrun Fuel Shutoff, Function
- up to model year 08

Component Identification:

The braking effect of the engine in the overrun mode is increased and the fuel consumption is reduced by means of the overrun fuel shutoff.

In overrun mode, the ME control unit switches the fuel injection valves off depending on the coolant temperature, gear and speed, if the accelerator pedal is not depressed.

The fuel injection valves are switched on again when the accelerator pedal is operated.

The deceleration fuel shutoff is suppressed at too high exhaust gas temperatures, because the high oxygen content in the exhaust during deceleration fuel shutoff can lead to an increased oxidation of carbon monoxide and hydrocarbon (after burning). The heat so generated can overheat the catalytic converters.

Engine speed and coolant temperature for deceleration fuel shutoff are dependent on engine and transmission version (different performance maps).