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. 18, 1984
Filed:
Nov. 03, 1982
Shinzo Ito, Aichi, JP;
Nippondenso Co., Ltd., Kariya, JP;
Abstract
A cylinder connects a measuring chamber filled with fuel to a gas pressure chamber set at a constant pressure maintained by a gas pressure device. A displacement member in the form of a piston separates the gas pressure chamber from the measuring chamber. A fuel injector is mounted to communicate with the measuring chamber. A displacement sensor is disposed inside the gas pressure chamber and has a contact member of free-dropping type which contacts with the top surface of the displacement member. A displacement signal from the displacement sensor representing the amount of displacement of the displacement member is supplied to an arithmetic operation unit. A control circuit controls the injection operation of the fuel injector, and supplies a command to the arithmetic operation unit to calculate the injection amount from the amount of displacement.