Renault Trucks

Mourad Hedna

Guillaume Millet

Bruno Gaudin

James E Marsden

Philip Meier

An apparatus is provided for injection of a fluid for an exhaust gases treatment device of an internal combustion engine arrangement. The apparatus includes a fluid injector fed from a source of fluid under pressure through a fluid conduit, a feed valve in the fluid conduit between the source of fluid the said injector, a purge system including a gas conduit connecting a source of pressurized gas to the fluid conduit, a pressure limiter within the gas conduit, and a check valve downstream of the pressure limiter. The pressure limited by the pressure limiter is lower than the pressure of fluid delivered by the source of fluid.

Apparatus and method for injection of a fluid for an exhaust gases treatment device

This fuel injector assembly () is used to inject fuel into a combustion chamber () of an engine. It comprises a needle control unit () adapted to actuate a needle () to deliver fuel to the chamber (), an amplifier unit () adapted to increase the pressure of a quantity of fuel coming from an accumulator () of fuel under pressure and a cam () driven feeder unit () adapted to feed the accumulator () with fuel under pressure. No external pump is needed to feed the accumulator ().

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Lyons, France

Mourad Hedna