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. 11, 2005
Filed:
Dec. 02, 2003
Koichiro Yomogida, Fujisawa, JP;
Futoshi Nakano, Fujisawa, JP;
Yusuke Saigo, Fujisawa, JP;
Yuji Sasaki, Fujisawa, JP;
Koichiro Yomogida, Fujisawa, JP;
Futoshi Nakano, Fujisawa, JP;
Yusuke Saigo, Fujisawa, JP;
Yuji Sasaki, Fujisawa, JP;
Isuzu Motors Limited, Tokyo, JP;
Abstract
The detected values of a common rail pressure that were detected by a pressure sensor are read within crank angle periods Δt which are at least not more than half of a pumping cycle ΔT of a supply pump, the values detected within one pumping cycle preceding a reading time (for example, S(1), S(0), . . . S(−4)) are averaged during each of the reading times, and the value thus obtained (for example, Pav()) is used as a common rail pressure after averaging processing, which is a representative value or a control value of the actual common rail pressure. The feedback control of common rail pressure is executed by using the values of common rail pressure after averaging processing thus computed by moving averaging. Consequently, the actual common rail pressure is converted into values suitable for control, and the feedback control of common rail pressure is executed with higher accuracy.