Title:
FUEL QUANTITY INCREASE DEVICE FOR MULTIPLE CARBURETOR
Document Type and Number:
Japanese Patent JP3196085
Kind Code:
B2
Abstract:
PURPOSE: To restrain the thinning of air-fuel mixture by opening a fuel quantity increase passage through actuation of a control valve by a control signal from a control circuit within the range of a determined vehicle speed and also within the range of determined intake pipe inside negative pressure.
CONSTITUTION: Each carburetor 1 at whose intake passage 2 a venturi portion 11 is formed, and a fuel quantity increase passage made to diverge from fuel inflow passages 17 are equipped. Also, fuel quantity increase distribution passages 20A-20C or the like that control a fuel quantity flowing in the fuel quantity increase passage and are made to branch off from the fuel quantity increase passage downstream of a control valve 21 and are connected to the intake passages 2 of respective carburetors 1, are equipped. The fuel quantity increase passage is made to open by actuating the control valve 21 by means of a control signal from a control circuit 30 within the range of a determined vehicle speed and also within the range of determined intake pipe inside negative pressure. As a result, the thinning of mixture at the times of the middle and high opening low speed operation and the accelerating operation of an engine can be restrained. Also, air-fuel mixture can be thickened aggressively at these operation spheres.
Inventors:
Takao Ishii
Hiroshi Yamazoe
Hiroshi Yamazoe
Application Number:
JP9035092A
Publication Date:
August 06, 2001
Filing Date:
March 16, 1992
Export Citation:
Assignee:
Keihin Co., Ltd.
International Classes:
F02D45/00; F02M7/12; F02M9/06; F02M13/02; (IPC1-7): F02M7/12; F02D45/00; F02M9/06; F02M13/02
Domestic Patent References:
| JP3151553A | ||||
| JP3151556A | ||||
| JP5977064A | ||||
| JP6045873U | ||||
| JP5523345B2 |
Attorney, Agent or Firm:
Hiroshi Ikeda