F - Mech Eng,Light,Heat,Weapons – 02 – M
Patent
F - Mech Eng,Light,Heat,Weapons
02
M
123/145
F02M 61/00 (2006.01) F02M 59/36 (2006.01) F02M 59/46 (2006.01) F02B 3/06 (2006.01)
Patent
CA 1208511
ABSTRACT OF THE DISCLOSURE A fuel injection device for air compressing, self- igniting internal combustion engines comprising at least one electromagnetic control valve by means of which a high pressure passage, in a fuel injection pump, may be connected to a low pressure passage, the said control valve comprising a valve element in the form of a piston slide valve, loaded by a spring, adapted to move axially in a housing chamber provided with at least one high pressure connection and one low pressure con- nection, and in operative connection with an electromagnetic actuating device preferably controlled by an electrically operated measurement processing device. According to the in- vention, the high pressure piston slide valve area, defined by a valve seat, of electromagnetic control valve, displays constantly the diameter of the valve seat, whereas low pressure piston slide valve area is designed with a smaller diameter than high pressure piston slide valve area. High pressure and low pressure housing chambers are preferably associated with the end faces of piston slide valve, the entire housing chamber being sealed and thus high pressure proof, the high pressure and low pressure housing chambers being adapted to be connected to each other by at least one line. The fuel injection device according to the invention is characterized by the extraordinarily stable behavior of the control valve, and by the perfect seal obtained when piston slide valve is in the closed position. The fuel injection device thus remains serviceable even at very high injection pressures.
445848
Michels Hans-Gottfried
Rizk Reda
Wallenfang Gerd
Klockner-Humboldt-Deutz Ag
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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