The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 30, 1978
Filed:
May. 12, 1975
Wolfgang Rapp, Esslingen, DT;
Dieter Schmidt, Stuttgart, DT;
Abstract
Injection device for injecting fuel into a combustion space such as an auxiliary combustion space of an external auto-ignition internal combustion engine of the type operating on the stratified-charge principle. The injection device includes a housing accommodating a movable pump plunger, a movable nozzle needle controlling the nozzle orifice opening into the auxiliary combustion space, and a movable piston-type storer. The pump plunger is configured to close off respective fuel return and fuel supply lines during its pumping stroke, at which time it effects a build up of pressure resulting in movement of the piston type storer until a predetermined sufficient pressure is reached to force the nozzle needle away from the closed position to thereby effect injection of fuel into the auxiliary combustion space. An adjustable stop is provided at the piston-type storer and the supply fuel to the fuel supply line is under an adjustable pre-pressure, whereby the adjusted pre-pressure and the configuration of the piston-type storer control the amount of fuel injection.