Mazda Motor Corporation

Koji Hirai

Tetsuhiro Yamashita

Kazuaki Nada

Yuki Yoshida

Hideharu Satou

Masaki Fujii

Yoshitsugu Hanada

Koji Kagami

Toshiki Yoshihara

Hiromichi Nomura

Kazuya Maruoka

Kazuhito Hayashi

Yuki Okamoto

Hideharu Sato

To provide an alarm system for a vehicle that can appropriately raise an alarm to a driver of a vehicle that is entering an intersection. An alarm systemfor a vehicle includes an alarm line setting partthat sets a right alarm lineand a left alarm lineboth extending forward from a vehicle. The alarm line setting partsets the length of the right alarm lineand the left alarm lineat L1 when the vehicle is running in a straight line. The alarm line setting partsets the length of the right alarm lineor the left alarm lineat a length different from L1 when the vehicleis to turn left or right at an intersectionto enter a first laneor a second lane

Alarm system for vehicle

To provide an alarm system for a vehicle that can reduce alarms that can irritate a driver. An alarm systemfor a vehicle includes a determination and alarm partthat determines whether or not an object will cross a right alarm lineor a left alarm linewithin a predetermined time and activates an alarm unit when it is determined that the object will cross the alarm line within the predetermined time. When the relative velocity of the object with respect to the right alarm lineor the left alarm lineis decreasing, the determination and alarm partperforms an alarm reduction control to reduce operation of the alarm unit compared with when the relative velocity is not decreasing.

A traction control system for a vehicle determines a target value of engine output torque. The determined output torque is suitable for a specified target of quantitative slippage based on an effective output torque and quantitative slippage of the drive wheels. the engine is controlled so as to attain the target engine output torque, restraining an excess of driving force during an occurrence of excessive slippage of drive wheels.

Traction control system for vehicles

In a traction control system for a vehicle provided with an engine having a supercharger, the traction control is terminated when the actual supercharging pressure is converged on a target supercharging pressure which is set according to the operating condition of the engine while the traction control by feedback control of the supercharging pressure is being effected.

Traction control system for a vehicle responsive to a position of an

A traction control system for an automotive vehicle performs traction control by controlling an engine having an exhaust system with a catalytic converter and a brake system to reduce driving force delivered to driving wheels, so as to diminish excessive slippage of the driving wheels. The traction control system includes a controller for changing an engine control mode from an ordinary control mode to an exhaust temperature reduction mode when a temperature of the catalytic converter is higher than a predetermined temperature and changing a control parameter of engine control, so that the engine provides an increase in output torque in the exhaust temperature reduction mode.

Traction control termination determining system

In a traction control system for a vehicle, the rate of slip of the driving wheels is calculated on the basis of the rotational speed of the driving wheels and the vehicle speed and the output power of the engine is controlled with a control gain so that the rate of slip of the driving wheels converges on a predetermined target value when the rate of slip of the driving wheels exceeds a predetermined threshold value. The control gain of the engine control for reducing the output power of the engine is set larger when the vehicle is making a turn than when the vehicle is running straight.

Traction control system for vehicle

A traction control system for a motor vehicle has an engine with a catalytic converter in an exhaust path. The traction control system has wheel speed sensors for detecting wheel speeds of respective wheels, a slip amount detection device for calculating slip amounts in driven wheels based on the wheel speeds, an engine output controller for decreasing engine output based on predetermined engine output decreasing patterns which correspond to the slip amounts, and an octane number detection device for detecting a difference in octane numbers of fuel between fuel designated in the engine and fuel actually supplied to the engine. The engine output decreasing pattern is changed so as to decrease unburned hydrocarbons in the exhaust gas flown into the catalytic converter when the octane number of the actually supplied fuel is more than a predetermined number smaller than that of the designated fuel.

Growing community of inventors

Hiroshima, Japan

Koji Hirai