Title:
エンジン制御
Document Type and Number:
Japanese Patent JP4006530
Kind Code:
B2
Abstract:
PCT No. PCT/SE94/00791 Sec. 371 Date Feb. 26, 1996 Sec. 102(e) Date Feb. 26, 1996 PCT Filed Aug. 29, 1994 PCT Pub. No. WO95/06199 PCT Pub. Date Mar. 2, 1995A method and device for controlling the fuel and/or air supply to an internal combustion engine in the fuel section thereof, such as a carburetor or a fuel injection system, so that the mixture ratio (A/F ratio) is adjusted automatically to a desired level in response to various operational conditions. In a rotational-speed feed back regulating circuit, a feed-back control unit which receives information on the rotational speed from the engine briefly adjusts an adjustment device to provide a brief change of the mixture ratio and, in connection with the brief A/F/ratio change, a number of revolution times are measured. At least one revolution time refers to a rotational speed that is essentially unaffected by the A/F ratio change and at least one revolution time refers to a rotational speed that is affected by the A/F ratio change. On the basis of these revolution times, at least one difference in revolution times between affected and unaffected rotational speeds is computed. Based on this difference and on stored information, the control unit will, as the case may be, affect the adjustment device to change the A/F ratio in the desired direction.
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Inventors:
Svenson, Wolf
Wolf, Peterson
Wolf, Peterson
Application Number:
JP2004255860A
Publication Date:
November 14, 2007
Filing Date:
September 02, 2004
Export Citation:
Assignee:
Fusukuvarna Actie Borrag
International Classes:
F02D41/14; F02D45/00; F02D31/00; F02D41/00; F02D41/04; F02D41/22; F02D41/36
Domestic Patent References:
| JP63176645A |
Foreign References:
| DE4305206A1 |
Attorney, Agent or Firm:
Atsushi Aoki
Jun Tsuruta
Tetsuro Shimada
Shimichi Akihisa
Kurachi Yasuyuki
Kumi Imaeda
Shinozaki Masami
Hirose Shigeki
Shinji Mitsuhashi
Tanimitsu Masaharu
Koichi Ito
Takashi Ishida
Masaya Nishiyama
Higuchi Souji
Niwa Masataka
Jun Tsuruta
Tetsuro Shimada
Shimichi Akihisa
Kurachi Yasuyuki
Kumi Imaeda
Shinozaki Masami
Hirose Shigeki
Shinji Mitsuhashi
Tanimitsu Masaharu
Koichi Ito
Takashi Ishida
Masaya Nishiyama
Higuchi Souji
Niwa Masataka