Other

Hitachi, Ltd.

Hitachi Car Engineering Co., Ltd.

Junichi Noda

Hiroshi Kuroiwa

Mitsuyoshi Okada

Toshimichi Minowa

Masahiko Ibamoto

Tatsuya Ochi

Masami Nagano

Kazuhiko Sato

The invention improves a combustion at a starting time by refining a fuel at a time of starting the engine so as to minimize an amount of the fuel attached to a wall surface and appropriately form an air-fuel mixture. When the engine starts, a control apparatus executes a control of increasing a fuel pressure supplied to a fuel injector in comparison with a normal operating time just after the engine start, and a divisional injection control of divisionally injecting the fuel injection for one cycle of the engine by the fuel injector at a plurality of times.

Control apparatus of fuel injection type internal combustion engine

In an apparatus for controlling an automatic transmission which is provided with a torque converter having a fluid coupling unit for coupling driving force to a transmission through fluid coupling and a direct coupling unit for coupling the driving force to the transmission through mechanical coupling and being operative to take a fluid coupling state, a direct coupling state or an intermediate state between the fluid and direct coupling states in accordance with a working pressure applied to the direct coupling unit, a control signal is generated for changing the initial value of the working pressure in accordance with the driving force during the period of transition between the fluid coupling state and the direct coupling state.

Controller for use with automatic transmission provided with lockup mechanism and memory medium storing method for control of automatic transmission

A control unit and a control method of an automatic transmission can accurately estimate an output shaft torque in a torque converter with little error. The control unit of the automatic transmission estimates an output shaft torque in a torque converter with using a characteristic of the torque converter and controls the automatic transmission by using the estimated torque converter output shaft torque. At lest one of a pump capacity characteristic and a torque ration characteristic of the torque converter is corrected in the control unit by using an oil temperature of the automatic transmission and at least one of parameters expressing an operating state, thereby estimating the torque converter output shaft torque.

Control apparatus and method of automatic transmission

A control apparatus of automatic transmission controls by oil pressure at least one clutch of an automatic transmission connected to an engine output to be engaged or disengaged to make gear shifting. In this control apparatus, the output torque of the engine is calculated on the basis of a parameter representative of a load of the engine and the engine speed. In addition, a transfer torque necessary for the clutch is calculated by use of at least the calculated engine output torque and the engine speed. Then, a command value of oil pressure acted on the clutch is determined by the calculated transfer torque.

Control apparatus and method for automatic transmission by oil pressure on clutch

A transmission torque of a friction part during a shift is requested in accordance with an input rotation speed and an input torque of the friction part of an automatic transmission and a target torque during the shift determines. An output torque of an engine is reduced in accordance with a difference between the transmission torque and the target torque. A control transmission torque supplied to the friction part is determined in accordance with the torque difference and the transmission torque, thereby an operation force to the friction part is determined and the operation force is supplied to the friction part. A control apparatus and method for the automatic transmission is provided wherein a stable shift time can obtain and a shift shock can be suppressed.

Growing community of inventors

Ibaraki-ken, Japan

Junichi Noda