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:
Apr. 13, 1993
Filed:
Apr. 17, 1991
John A Kimberley, East Granby, CT (US);
John B Cavanaugh, W. Springfield, MA (US);
AIL Corporation, Columbia, SC (US);
Abstract
A high pressure fuel injection system utilizes a pressure regulating or control valve to provide a high residual pressure within the injector between injections. Maintaining a high residual fuel pressure boosts the injection pressure to provide improved fuel atomization, with consequent reductions in particulate emissions and increased fuel efficiency. The pressure regulating valve, which may be located in the injector leak-off fuel conduits or in the high pressure line connecting the fuel injection pump with the injector, may be controlled in accordance with engine operating conditions to provide a variable injection pressure boost commensurate with engine requirements.