Fuel supply device for spark ignition engine with direct injection, has tubular duct with fuel return hole and pressure relief valve arranged on its one end, where valve acts as de-airing valve and drain valve of fuel distribution ramp

摘要

The device has a tubular duct (18) with a fuel return hole (26) and a pressure relief valve (20) arranged on its one end that is away from a fuel distribution ramp (10). The valve acts as a de-airing valve and a drain valve of the ramp. The valve is axially movable between a primary position (24) in which the valve disconnects the hole and the ramp and a secondary position (28) in which the hole is connected to the ramp. An independent claim is also included for a method for operating an internal combustion engine particularly a spark ignition engine with direct injection, of a motor vehicle.