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Patent Searching and Data


Title:
AIR-FUEL RATIO CONTROL DEVICE FOR CARBURETOR
Document Type and Number:
Japanese Patent JPS62159754
Kind Code:
A
Abstract:

PURPOSE: To aim at enhancing the driveability of a vehicle during transition into high load operation, by carrying out the opening operation of a valve device for driving a power valve and the operation of setting the area of a bypass passage downstream of the power valve to a predetermined value, at the same time so that variations from a desired air-fuel ration are prevented.

CONSTITUTION: There is provided a power valve 26 adapted to open a passage 31 bypassing a main fuel passage 23, in association with the operation of a vacuum piston 27. Further, there are provided a valve device 30 for actuating the vacuum piston 27 and a means for changing the area of the bypass passage 31 downstream of the power valve 26. Further, there are provided means 35, 36 for detecting the load of the engine and the temperature of cooling water, respectively, and a means 38 for discriminating the condition of temperature during high load operation in accordance with detection signals delivered from the means 35, 36. Further, with the result of discrimination by the means 38, a simultaneous control means 39 sets a control amount for the means 32 to a predetermined value, and at the same time the valve device 30 is opened.


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JPS5368324CORBURETOR
Inventors:
KAWAJIRI HIROKI
SHIOYAMA GIICHI
HAMAI KYUGO
Application Number:
JP281186A
Publication Date:
July 15, 1987
Filing Date:
January 09, 1986
Export Citation:
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Assignee:
NISSAN MOTOR
International Classes:
F02M7/04; (IPC1-7): F02M7/04
Attorney, Agent or Firm:
Masaki Goto