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US 6,578,544 B2Granted
Electromagnetic fuel injection valve
AssigneeBosch Automotive Systems Corporation
InventorKouji Sato
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AssigneeBosch Automotive Systems Corporation
InventorKouji Sato
Estimating the term…
The present invention provides an electromagnetic fuel injection valve having a simple and efficient constitution for enabling the jets 23 themselves from injection orifices to cool and wash off the nozzle body 13, and to suppress or remove carbon deposits that is produced and adhere to the injection orifices. In an electromagnetic fuel injection valve, which injects a high-pressure fuel as a flat-shaped spray 21 (fan spray) by causing the jets 23 to impinge on one another after being injected from at least a pair of injection orifices, the constitution is such that, with the aim of causing jets 23 to impinge, by controlling the pressure and direction of the jets 23, so that the jets 23 also go to, in addition to a normal injection direction which goes toward the direction of the combustion chamber 4, also to the opposite direction (upstream side) which goes toward the direction of the bottom surface of the combustion chamber side of the nozzle body 13, the jets 23 resulting from fuel injected from injection orifices impinge on one another, and a flat-shaped spray 21 is diffused in the direction of the combustion chamber 4, and, in addition, also diffused in the direction of the nozzle body 13 on the upstream side thereof (upstream side diffusing portion 21C).
An electromagnetic fuel injection valve for placement in a combustion chamber, the valve comprising:
A method of delivering fuel through a fuel injection valve in a combustion chamber, wherein the valve comprises a nozzle body having a side which faces into a combustion chamber and the nozzle body side having at least a pair of injection orifices which define respective jets of fuel to be sprayed, the orifices being shaped and angled with respect to each other so that the jets of fuel through the orifices impinge upon one another, and the orifices have a pitch spacing between them;
Dependencies are inferred from the claim text.