Fuel injection valve
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United States of America Patent
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Dec 7, 2021
Grant Date -
Jun 18, 2020
app pub date -
Feb 20, 2020
filing date -
Aug 24, 2017
priority date (Note) -
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Abstract
A fuel injection valve includes a needle valve that controls communication between a high pressure chamber and an injection hole, a follower valve provided inside a control chamber controlled by fuel pressure inside an intermediate chamber, and an open-close valve that controls communication between a first passage and a low pressure passage and communication between a second passage and the low pressure passage. The fuel injection valve is configured to control the gradient of the fuel injection rate from the injection hole with an improved configuration.
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