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:
Jan. 07, 1997
Filed:
Nov. 22, 1995
Josef Guentert, Gerlingen, DE;
Karsten Hummel, Beilstein, DE;
Guido Kampa, Althengstett, DE;
Axel Paetz, Filderstadt, DE;
Karel Kolar, Czech, CS;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A fuel-injection pump for internal combustion engines, particularly an in-line injection pump for diesel engine, with a control bore in the pump cylinder and with an upper control edge for determining the start of feed and an oblique spill edge for determining the end of feed. The pump piston is rotated about its longitudinal axis in order to set the desired feed quantity, for the purpose of achieving a better regulating behavior of the system as a whole, comprising the fuel-injection pump, feed-quantity regulator and internal-combustion engine. The spill edge is subdivided, along its run over a part of the circumference of the pump piston, into portions with different angles of inclination (.alpha..sub.1, .alpha..sub.2) to the axis of the pump piston. The control-edge portion having the large angle of inclination (.alpha..sub.2) is located in the region of the pump piston which passes over the control bore during the pump-piston stroke in a rotary position of the pump piston for small feed quantities (lowered load range of the internal-combustion).