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:
Feb. 18, 1986
Filed:
May. 11, 1984
Gunther H Herdin, Steyr, AT;
Walter Hack, Ternberg, AT;
Steyr-Daimler-Puch Aktiengesellschaft, Vienna, AT;
Abstract
Apparatus for controlling the quantity of fuel injected per shot or the beginning of fuel injection in a diesel engine comprises a control rod, which is adjustable by a stepping motor through the intermediary of a resiliently yieldable coupling. The control rod acts to control the injection pump or pumps. In order to provide a structurally simple apparatus which comprises a low-power stepping motor and to eliminate backlash between the cooperating elements of the apparatus, the shaft of the stepping motor carries a camwheel, which is indirectly engaged by the control rod, which is biased by a spring. The resiliently yieldable coupling can be coaxial with the camwheel and adapted to rotate as far as to stop only in one sense of rotation whereas the coupling is rigidly connected to the camwheel for a movement in the other sense of rotation. Alternatively, the coupling can consist of two coupling levers, which are adapted to be pivotally moved apart about a common axis from a position of rest, which is defined by a stop. One of said two coupling levers engages the cam of the camwheel, which is nonrotatably connected to the shaft of the stepping motor. The other of said coupling levers engages an abutment carried by the control rod.