Control apparatus of internal combustion engine
First Claim
1. A control apparatus for an internal combustion engine comprising a base ignition timing information generating means for generating a plurality of base advance informations according to octane number of fuel being used in said internal combustion engine, a knock detecting means for detecting a knocking condition of said internal combustion engine, an operating condition detecting means for detecting an operating condition of said internal combustion engine, a fuel distinguishing means for determining said fuel being used in said internal combustion engine on the basis of detection results by said knock detecting means and detection results by said operating condition detecting means, a base ignition timing setting means adapted to be operated on the basis of detection results by said fuel distinguishing means to obtain base ignition timing information in accordance with octane number of fuel determined by said fuel distinguishing means from base ignition timing informations by said base ignition timing information generating means, thereby setting the base ignition timing of said internal combustion engine according to information obtained, and a knock control means for retarding said ignition timing set by said base ignition timing setting means on the basis of an output from said knock detecting means when said internal combustion engine knocks, thereby suppressing generation of knocking.
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Accused Products
Abstract
A control apparatus for an internal combustion engine operable on fuels of different octane numbers implements automatic control when the engine knocks to correct the ignition timing preset in accordance with the octane number of the fuel in use to the retarded side so that the engine operates under the optimum condition. This automatic control enhances engine output and drivability, prevents engine fracture and saves fuel cost.
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Citations
18 Claims
- 1. A control apparatus for an internal combustion engine comprising a base ignition timing information generating means for generating a plurality of base advance informations according to octane number of fuel being used in said internal combustion engine, a knock detecting means for detecting a knocking condition of said internal combustion engine, an operating condition detecting means for detecting an operating condition of said internal combustion engine, a fuel distinguishing means for determining said fuel being used in said internal combustion engine on the basis of detection results by said knock detecting means and detection results by said operating condition detecting means, a base ignition timing setting means adapted to be operated on the basis of detection results by said fuel distinguishing means to obtain base ignition timing information in accordance with octane number of fuel determined by said fuel distinguishing means from base ignition timing informations by said base ignition timing information generating means, thereby setting the base ignition timing of said internal combustion engine according to information obtained, and a knock control means for retarding said ignition timing set by said base ignition timing setting means on the basis of an output from said knock detecting means when said internal combustion engine knocks, thereby suppressing generation of knocking.
Specification