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. 18, 1983
Filed:
Mar. 28, 1980
Toshimi Abo, Yokohama, JP;
Hidetoshi Kanegae, Yokohama, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
To shorten the time length of a start phase of the operation of a two-shaft gas turbine engine, closed-loop control of the rate of fuel feed is performed based on the magnitude of deviation of actual rate of rotation of the gas generator shaft from a target value during a time period shortly after starting of the engine, until actual speed of the power turbine sufficiently nears a target value, and then the basis of closed-loop control is switched over to the magnitude of deviation of actual speed of the power turbine from the target value. This method is practised by appropriately presetting the target value of the rotation rate of the gas generator shaft and by continuously making a comparison between the aforementioned two deviations and always selecting the smaller one of the two for use it as a feedback signal to produce a fuel feed rate control signal.