Mazda Motor Corporation

Akitomo Kume

Seiyo Hirano

Hideki Sanai

Kunitomo Minamitani

Shingo Harada

Yoshiyuki Shinya

Katsumasa Yoshida

Kazuya Kotani

Masaru Takase

Hisanobu Okada

Setsuya Kishimura

Ryohei Yasutomi

Takeshi Yabuki

Keishi Taki

Hiroyuki Kisaka

A vehicle system comprises a brake system comprising a brake pedal and a braking mechanism configured to apply a braking force to a vehicle, and a vehicle control unit operable to automatically stop an engine when the vehicle is decelerated to a given vehicle speed or less during traveling. When it is detected that the brake pedal is manipulated and the vehicle is stopped after automatically stopping the engine, the vehicle control unit is operable to control the braking mechanism to increase the braking force from a current value according to a manipulation amount of the brake pedal up to a given value.

Vehicle system

One example method for an engine having an automatic stopping function in which the engine is automatically stopped when a predetermined engine stopping condition is satisfied, and then the engine is automatically restarted when a predetermined engine restarting condition is satisfied, includes the following: a first step for driving a motor so as to increase an engine rotating speed of the engine up to a predetermined rotating speed and maintain the engine rotating speed, in a case in which a predetermined first condition is satisfied when the engine rotating speed is below the predetermined rotating speed during automatic engine stopping; and a second step for restarting a fuel supply into the engine in a case in which a predetermined second condition is satisfied after the first step is executed.

Control method and control device for engine

An engine control system for diminishing driveline vibrations extracts resonant frequency component coincident in frequency with a driveline resonant vibration according to a gear ratio of a transmission of the driveline from a change in charging efficiency with time that is detected on the basis of a signal representative of an amount of intake air, converts the resonant frequency component to a demanded amount of engine torque reduction after having adjusted the resonant frequency component in phase, and causes the demanded amount of engine torque reduction by retarding an ignition timing and/or reducing an amount of fuel injection.

Control system for internal combustion engine

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Hiroshima, Japan

Akitomo Kume