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. 14, 1986
Filed:
Sep. 13, 1984
Fumiaki Kobayashi, Toyota, JP;
Yoshiyasu Ito, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A fuel injection pump for a diesel engine includes a housing having a bore within which a plunger reciprocates according to the operation of the engine, the bore defining a pumping chamber at an end of the plunger. The pumping chamber is communicated to a fuel intake passage only when the plunger is moving in a direction to enlarge the size of the pumping chamber and being communicated to fuel injection nozzles only when the plunger is moving in a direction to reduce the size of the pumping chamber. A first electromagnetic valve for fuel shutoff is provided at a middle portion of the fuel intake passage. A second electromagnetic valve, advantageously used also for fuel amount control by timely venting the pumping chamber in its compression stroke, communicates the pumping chamber to the intake passage downstream of the first electromagnetic valve for at least a predetermined short time period when the first electromagnetic valve is closed.