Control device for internal combustion engine
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United States of America Patent
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Jan 9, 2018
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N/A
app pub date -
Apr 4, 2016
filing date -
May 8, 2015
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Abstract
A knocking detector is to detect knocking in the internal combustion engine in which a low-octane fuel is injected into a cylinder and a high-octane fuel whose octane number higher than an octane number of the low-octane fuel is injected into an inlet port. A knocking suppressor includes a first knocking suppressor and a second knocking suppressor. The first knocking suppressor is to increase a high-octane fuel ratio of an injection quantity of the high-octane fuel to a sum of an injection quantity of the low-octane fuel and the injection quantity of the high-octane fuel in order to suppress knocking in the internal combustion engine when the knocking detector detects the knocking. The second knocking suppressor is to suppress knocking of the internal combustion engine at a beginning of a period while the first knocking suppressor increases the high-octane fuel ratio.
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