Title: Fuel supply control system for internal combustion engines

Abstract: A fuel supply control system for internal combustion engines properly controls the additional fuel supply at high speed operation and full load operation of the engine without causing overheating of the exhaust gas purifying device of the engine. The fuel supply control system includes a throttle switch for generating a load detection signal when the throttle valve is at its substantially full open position indicative of the heavy load condition of the engine and includes a high speed detecting device for generating a high speed detection signal when the amount of air sucked into the engine or when the intermittent signals from an ignition device exceeds a predetermined amount. In response to at least one of the detection signals, the additional fuel is supplied to the engine.

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Inventors: Kondo, Toshio (Anjo, JP)
Harada, Susumu (Oobu, JP)
Ito, Nobuyuki (Hekinan, JP)
Kobayashi, Nobuyuki (Toyota, JP)

Application Number: 794648
Filing Date: 1977-05-06
Publication_date: 1980-05-13
Assignee: Nippondenso Co., Ltd. (Kariya, JP); Toyota Jidosha Kogyo Kabushiki Kaisha (Toyota, JP)
Primary Class(es): 123/492 123/478
Other Classes:
US Patent Ref:

2845910	Aug, 1958	Pribble	123/32.
3272187	Sep, 1966	Westbrook et al.	123/32.
3661126	May, 1972	Baxendale	123/32.
3673989	Jul, 1972	Aono et al.	123/32.
3749070	Jul, 1973	Oishi et al.	123/32.
3935851	Feb, 1976	Wright et al.	123/32.
3983851	Oct, 1976	Hoshi	123/32.
4010717	Mar, 1977	Taplin	123/32.
4048964	Sep, 1977	Kissel	123/32.

Other Refs:
Primary Examiner: Argenbright, Tony
Assistant Examiner:
Attorney: Cushman, Darby & Cushman