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:
Dec. 13, 1988
Filed:
Dec. 03, 1987
Otto Freudenschuss, Vienna, AT;
Steyr-Daimler Puch AG, Vienna, AT;
Abstract
A fuel injection pump for diesel engines comprises a housing, which contains a cylinder sleeve that has at least one radial fuel port. An injector plunger is slidably mounted in the cylinder sleeve and has two axially spaced apart valving edges for cooperation with the fuel port. The plunger is coupled to a plunger follower, which is movably mounted in the housing and which is operable by a camshaft via an actuating member against the force of a return spring. The stroke position of the plunger is adjustable by means of a stop, which is adjustable by means of a timing piston, which is movable in a timing cylinder, which is supplied with hydraulic oil through a check valve. To simplify the structure and to permit the stroke position of the plunger to be adjusted at a high speed, the timing cylinder is constituted by the plunger follower and is formed with an oil outlet port, which communicates with an outlet opening of the housing at the end of the discharge stroke of the plunger. The plunger is coupled to the plunger follower with an axial backlash, which is adapted to be reduced by means of the timing piston.