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US 4,617,898 AGranted
Fuel delivery to internal combustion engines
AssigneePiper FM Limited
InventorRobert J. Gayler
Life of this patent
Estimating the term…
Abstract
Fuel for a working cylinder chamber (8) of an internal combustion engine is drawn through an atomizing nozzle (39) from an accumulator (30). Fuel is supplied by a low pressure source (12) through a variable constriction (16) linked to the throttle (4) and through a solenoid valve which is pulsed at a frequency proportional to engine speed.
Claims8
Apparatus for supplying fuel to an internal combustion engine, having an air intake duct for said engine, a variable air throttle valve in said duct, and at least one nozzle for delivering fuel to said intake duct, said apparatus comprising
- (a) a source of fuel,
- (b) means defining a flow path for fuel from said source to said nozzle,
- (c) a metering valve in said flow path and having a variable constriction providing a variable flow resistance in said path,
- (d) link means linking said metering valve to said throttle valve to reduce said flow resistance of said metering valve with increasing opening of said throttle valve, said link means determining a specific value of said constriction for each position of said throttle,
- (e) an electrically operated on/off valve in said flow path,
- (f) an accumulator in said flow path downstream of said metering valve and said on/off valve,
- (g) control means for said on/off valve, said control means including a memory in which are stored values for the on time of said on/off valve in relation to predetermined values including engine speed and throttle opening,
- (h) an engine tachometer connected to said control means, and
- (i) a throttle opening transducer connected to said control means.
6 more elements
Dependencies are inferred from the claim text.