Air/fuel induction system for spark ignition internal combustion engines, and electromagnetic valves

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4587986
SERIAL NO

06702121

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A motor vehicle fuel system operable selectively to supply metered quantities of petrol or LPG in its gaseous state to a carburetter induction passage. The LPG system includes a single stage pressure regulator and an injection valve which may be a digital or an analogue valve. The regulator operates to vary the pressure of gaseous LPG with variations in engine loading by referring that pressure across a single diaphragm to the pressure established in the induction passage downstream of the throttle valve by operation of the engine, while maintaining that regulated gas pressure above that subsisting in the induction passage upstream of the throttle valve. An electronic control system, which may be an analogue control system or a digital control system incorporating a microprocessor having a data store matrix, responds to certain engine operating conditions and controls operation of the injection valve whereby the latter injects metered quantities of gaseous LPG for presentation to the induction passage upstream of the throttle valve in accordance with the requirements of the engine. If a digital injection valve is used, provision is preferably made for smoothing the pulsed output of that valve before it is presented to the induction passage.

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Patent Owner(s)

Patent OwnerAddress
SOLEX (U K ) LIMITED77 CAPITOL PARK CAPITOL WAY A COMPANY OF BRITISH LONDON NW9 OEW

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Clarke, Peter J Leighton Buzzard, GB2 26 546
Marriage, David J Dunstable, GB2 3 34
Pagdin, Brian C Dunstable, GB2 8 162
Shadbolt, Colin F Leighton Buzzard, GB2 2 13
Sheppard, Ian J St. Albans, GB2 4 26
Ullman, Thomas J Cranfield, GB2 2 13

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