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. 09, 1999
Filed:
Feb. 18, 1998
Ulrich Augustin, Kernen, DE;
Daimler-Benz A.G., Stuttgart, DE;
Abstract
In a fuel injection control system for a multi-cylinder internal combustion engine including a high pressure fuel pump for supplying fuel under pressure to the fuel injection valves of the various cylinders through a distribution line including a fuel distribution element dividing the fuel supply to two groups of fuel injection valves, the fuel distribution element includes a piston disposed in a cylinder and adapted to interrupt fuel flow to any one of the two groups in which a leak occurs such that fuel supply to the other group of fuel injection valves can be maintained for an emergency operation of the engine. If small leaks are detected by the electronic engine operating control, the valves of one of the groups are momentarily deactivated to cause the distribution element to interrupt the fuel supply to the other group of fuel injection valves. If this action eliminates the leakage, the leakage is determined to be in the supply to the other group of fuel injection valves and the fuel supply to the other group of fuel injection valves remains interrupted while the fuel injection valves of the one group are reactivated to permit operation of the engine on an emergency basis.