Toyota Jidosha Kabushiki Kaisha

Tomoyuki Uchiyama

Noritake Mitsutani

Hiromitsu Seo

Takuya Takei

Tomohiko Satomi

Koichi Kimura

Yoshiyuki Tanaka

Katsutoshi Tanei

Masaya Murata

A fuel injector for an internal combustion engine includes a fuel injection valve, a heater, and a controller. The fuel injection valve is configured to supply fuel to the internal combustion engine. The heater is configured to heat the fuel in the fuel injection valve. The controller is configured to: control the fuel injection valve to stop supplying the fuel to the internal combustion engine, control the heater to execute or stop heating the fuel in the fuel injection valve, and control the fuel injection valve to prohibit the stop of supplying the fuel during execution of the heating by the heater.

Fuel injector of internal combustion engine and fuel injection method thereof

An EFI-ECU determines an initial value of a correction value ekthwst for correcting an injection correction amount with reference to a non-heating initial value map if a heater is in operation, and determines the initial value of the correction value ekthwst for correcting the injection correction amount with reference to a heating initial value map if the heater is out of operation. It should be noted herein that the initial value of the correction value ekthwst is set lower under the same condition in the heating initial value map than in the non-heating initial value map.

Fuel injection amount control device

A fuel injection system in the present invention is provided with a fuel injection valve () which incorporates a heater () for heating fuel before being injected. The temperature of the heater () is estimated on the basis of the resistance value Rof the heater (). The temperature of the heater () estimated at or after the time of occurrence of a point of inflection in the resistance value Rof the heater () is corrected in order to reduce to zero the difference between the nucleate boiling start point temperature and the estimated temperature value of the heater () at the time of occurrence of the point of inflection.

Fuel injection system

A control apparatus for an internal combustion engine according to the invention obtains a first index that indicates the amount of fuel adhering to the wall surface of an intake passage, using intake valve timing; obtains a correction value that reduces the first index, using exhaust valve timing and the intake valve timing; and calculates a second index that indicates the amount of fuel adhering to the wall surface of the intake passage, using the correction value. The control apparatus controls the amount of fuel to be injected based on at least one of the first index and the second index.

Control apparatus for internal combustion engine

An engine is automatically stopped when a predetermined amount of time has passed with a predetermined stopping condition being fulfilled, even if learning is not yet complete, when an automatic stopping condition of the engine and a learning execution condition of a control amount of the engine during idling have been fulfilled. However, the engine is prohibited from automatically stopping until the learning is complete when the learning history of the control amount has been cleared by battery disconnection or the like and is not stored. Accordingly, it is possible to both simultaneously control an idling stop when the engine is idling and learn the control amount, as well as minimize a strange sensation felt by the driver that arises from an idling stop not being performed.

Control apparatus and method for automatically stopping and starting internal combustion engine mounted in vehicle

The electronic control unit sets an initial value of an inertia torque equivalent flow rate Qmg as an air flow equivalent to an inertia torque that acts on rotational elements related to a crankshaft, and a diminishing rate thereof, based on a shift position SP and coolant temperature Tw after the engine is cranked by a motor generator and the engine speed reaches an idle speed. The electronic control unit controls an the engine speed using an idle speed maintaining flow rate Qisc which is obtained by subtracting the inertia torque equivalent flow rate Qmg from a target idle speed maintaining flow rate Qisc*.

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Nisshin, Japan

Tomoyuki Uchiyama