Toyota Jidosha Kabushiki Kaisha

Aisin Aw Co., Ltd.

Toshihiro Fukumasu

Seiji Kuwahara

Kazuyuki Shiiba

Ichiro Kitaori

Hiroyuki Sawada

Nobufusa Kobayashi

Masato Kaigawa

Yoshio Hasegawa

Masami Kondo

Hiroshi Kanai

Takayuki Otsuka

Naoki Itazu

Hideki Kubonoya

Masaharu Tanaka

Naoto Moriya

Yoshiaki Atsumi

Naoya Okada

Hiromitu Metugi

Atsushi Yoshimura

Shyusaku Kitamura

Atsushi Nakamura

A breather device includes a main body that includes a breather chamber with an inner bottom surface; a first communicating portion provided at the main body; a second communicating portion provided at the main body and at a position above the first communicating portion in a vertical direction and away from the first communicating portion in a horizontal direction; and a downward gradient provided at the inner bottom surface of the breather chamber, the downward gradient guides the oil that has entered the breather chamber through the first communicating portion toward the first communicating portion.

Breather device of automatic transmission

An ECU controls an automatic transmission that can be manually shifted. The ECU executes a program that includes i) the step of, when there are a plurality of allowed gears that are allowed at the time of a downshift operation, continuously determining whether the engine speed NE after a downshift will be in a preset overspeed region for each allowed gear when the second and subsequent allowed gears are lower than an output gear, and when there is an allowed gear that will result in the engine speed NE being in the overspeed region, ii) the step of cancelling that allowed gear. Thus this control appropriately suppresses overspeeding of the engine while executing a manual shift in response to an operation by the driver without bothering the driver.

Automatic transmission control apparatus, control method, program for realizing that method, and recording medium on which that program is recorded

When an automatic transmission is in a manual mode, a transmission ECU calculates a speed sftrng manually requested by the driver and a speed sftrngmap set by a shift map and then performs a shift prohibition procedure. In this procedure, if the engine coolant temperature is equal to or lower than a predetermined coolant temperature or the AT fluid temperature is equal to or lower than a predetermined fluid temperature, a prohibition, determination flag xthlow is set to 'on', and if the engine coolant temperature is higher than the predetermined coolant temperature and the AT fluid temperature is higher than the predetermined fluid temperature, the prohibition determination flag xthlow is set to 'off'. When the prohibitions determination flag xthlow is &#x201c;on&#x201d;, the speed sftrngmap is set as the upper limit of the speed sftrng.

Automatic transmission control apparatus and method

A program is executed which includes a step (S) of calculating a base required driving force, a step (S) of calculating a reference driving force, a step (S) of calculating a final required driving force on which a vibration suppression filtering process has been performed when the base required driving force is greater than a reference driving force, and a step (S) of calculating a final required driving force on which the vibration suppression filtering process has not been performed when the base required driving force is equal to or less than the reference driving force.

Vehicle driving force control apparatus and method

An ECU executes a program that includes the steps of i) calculating a sporty running counting SC based on a state of a vehicle according to an operation of a driver; ii) changing a condition for executing sporty running in which an upshift is inhibited when an accelerator is suddenly released and in which a downshift is promoted during sudden braking such that the condition is easier to satisfy and changing a condition for returning from sporty running so that it is more difficult to satisfy when the sporty running count SC is equal to or greater than a threshold value; and iii) changing the condition for executing sporty running so that it is more difficult to satisfy and changing the condition for returning from sporty running so that it is easier to satisfy when the sporty running count SC is not equal to or greater than the threshold value.

Control apparatus and control method of a vehicle, program for realizing that control method using a computer, and recording medium on which that program is recorded

A controller of an automatic transmission can be set to be in a first control mode and a second control mode for controlling a transmission gear ratio of the automatic transmission. The controller in the second control mode automatically changes the transmission gear ratio. The controller obtains an index value and upper limit speed of rotation speed of a transmission output shaft. The controller in the first control mode allows the transmission gear ratio to be changed when an operation member is operated to increase the transmission gear ratio and the index value is equal to or lower than the upper limit speed. The controller has a setting section that sets the upper limit speed. The setting section sets the upper limit speed based on vehicle acceleration when the controller is in the first control mode and the operation member is operated to increase the transmission gear ratio.

Control device for automatic transmission

An air-fuel ratio control device for an internal combustion engine of a vehicle is disclosed. The device controls the air-fuel ratio with a target value which is larger than the stoichiometric air-fuel ratio, as a control center, in an idle condition. The target value is changed to become small when an amount of intake air in an idle condition is larger than a predetermined value.

Air-fuel ratio control device for internal combustion engine

Growing community of inventors

Nagoya, Japan

Toshihiro Fukumasu