Method for limiting fuel leakage from an injector after stoppage of the engine by means of forced cooling of the injection rail
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United States of America Patent
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Nov 20, 2018
Grant Date -
Oct 26, 2017
app pub date -
Apr 17, 2017
filing date -
Apr 25, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
Disclosed is a method for limiting fuel leakage from at least one injector in an engine of a motor vehicle, the engine being stopped and the motor vehicle ignition circuit being switched off, the injector being supplied with fuel via a fuel rail which is pressurized during operation, the pressurization persisting for a certain period when the engine has been stopped and the ignition circuit switched off, leading to leakage of fuel through the injector. The injection rail is subjected to forced cooling following the stoppage of the engine with the motor vehicle ignition circuit switched off, which is sufficient to reduce the pressure, the forced cooling continuing until the pressure in the rail is close to atmospheric pressure.
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