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US 8,474,437 B2Granted
Fuel injection controlling apparatus of internal combustion engine
AssigneeToyota Jidosha Kabushiki Kaisha
InventorTakashi Tsunooka
Life of this patent
Estimating the term…
Abstract
A fuel injection controlling apparatus (electronic control unit) of an internal combustion engine, which can cause first to fourth fuel injection valves of respective cylinders connected to a fuel delivery pipe to inject a fuel, which is heated after fed from a fuel pump (feed pump), is provided with a fuel pump control unit that stops a drive of the fuel pump (feed pump) until the heated fuel in the fuel delivery pipe is reduced to a predetermined amount or less.
Claims13
A fuel injection controlling apparatus of an internal combustion engine comprising:
- a fuel pump configured to feed fuel from a fuel tank into a fuel path;
- a fuel delivery pipe configured to distribute the fuel in the fuel path to respective cylinders;
- fuel injection valves of the respective cylinders configured to inject the fuel supplied from the fuel delivery pipe into respective suction ports;
- a heating unit disposed adjacent to the fuel delivery pipe and configured to heat the fuel in the fuel delivery pipe fed from the fuel path when the fuel has a cold start property;
- and
- a fuel pump control unit configured to stop a drive of the fuel pump until the heated fuel in the fuel delivery pipe is reduced to a predetermined amount or less so that non-heated fuel is not supplied into the fuel delivery pipe.
3 more elements
A fuel injection controlling apparatus of an internal combustion engine comprising:
- a fuel pump configured to feed fuel from a fuel tank into a fuel path;
- a fuel delivery pipe configured to distribute the fuel in the fuel path to respective cylinders;
- fuel injection valves of the respective cylinders configured to inject the fuel supplied from the fuel delivery pipe into respective suction ports;
- a heating unit disposed adjacent to the fuel delivery pipe and configured to heat the fuel in the fuel delivery pipe fed from the fuel path when the fuel has a cold start property;
- a first fuel injection cylinder specifying unit configured to specify a first fuel injection cylinder to which the fuel is supplied first when the engine starts;
- and
- a fuel pump control unit configured to control a fuel feed amount of the fuel pump at a low temperature start according to the specified first fuel injection cylinder.
4 more elements
A fuel injection controlling apparatus of an internal combustion engine comprising:
- a fuel pump configured to feed fuel from a fuel tank into a fuel path;
- a fuel delivery pipe configured to distribute the fuel in the fuel path to respective cylinders;
- fuel injection valves of the respective cylinders configured to inject the fuel supplied from the fuel delivery pipe into respective suction ports;
- a heating unit disposed adjacent to the fuel delivery pipe and configured to heat the fuel in the fuel delivery pipe fed from the fuel path when the fuel has a cold start property;
- a start fuel injection valve setting unit configured to set a start fuel injection valve suitable for improving a low temperature start property from the respective fuel injection valves according to a minimum necessary number of times of ignition of the heated fuel which is necessary to stably start the internal combustion engine at a low temperature start;
- and
- a fuel injection control unit configured to execute a control so that a fuel injection is started from the set start fuel injection valve.
4 more elements
A fuel injection controlling apparatus of an internal combustion engine comprising:
- a fuel pump configured to feed fuel from a fuel tank into a fuel path;
- a fuel delivery pipe configured to distribute the fuel in the fuel path to respective cylinders;
- fuel injection valves of the respective cylinders configured to inject the fuel supplied from the fuel delivery pipe into respective suction ports;
- a heating unit disposed adjacent to the fuel delivery pipe and configured to heat the fuel in the fuel delivery pipe fed from the fuel path when the fuel has a cold start property;
- a start fuel injection valve setting unit configured to set a start fuel injection valve suitable for improving a low temperature start property from the respective fuel injection valves according to a minimum necessary number of times of ignition of the heated fuel which is necessary to stably start the internal combustion engine at a low temperature start;
- and
- an engine stop control unit configured to control, when the engine stops, a stop position of a piston of a cylinder according to the start fuel injection valve so that the cylinder starts in a suction stroke when the engine starts.
4 more elements
Dependencies are inferred from the claim text.