A control system for a vehicle includes an ECU, a front wheel speed sensor, a rear wheel speed sensor, and an engine. The ECU detects an actual slip speed and an actual slip ratio of a rear wheel on the basis of respective detected values of a front wheel speed sensor and a rear wheel speed sensor. Slip speed traction control is started when the actual slip speed exceeds a threshold value of a slip speed when a vehicle is at a low speed, and slip ratio traction control is started when the actual slip ratio exceeds a threshold value of a slip ratio when it is at an intermediate or high speed. An output of the engine is adjusted depending on the actual slip speed in the slip speed traction control, while being adjusted depending on the actual slip ratio in the slip ratio traction control.

Control system and vehicle including the same

An electronic engine control unit for a motorcycle or other two-wheeled vehicle gradually decreases engine torque at the time of a failure so as to eliminate an uneasy feeling that an operator might experience if the engine torque were to be reduced abruptly. When a failure is detected, a throttle valve is closed gradually by initially closing the valve quickly and then slowly closing the valve so as to obtain a smooth decrease in engine torque. In addition, the ignition timing is changed gradually toward retardation to gradually decrease engine torque. Alternatively, the ignition pulses to the cylinders are thinned out gradually to cause a gradual decrease in engine torque. As a further alternative in the case of a multi-cylinder engine, the ignition pulses are stopped on a cylinder-by-cylinder basis to cause a gradual decrease in engine torque.

Electronic engine control device

PROBLEM TO BE SOLVED: To provide an engine ignition time control device for delaying the engine ignition time when starting, and for preventing the generation of delay except the starting time. SOLUTION: An engine ignition time control device is provided with a manual start switch 1, a start traveling detecting means 2 for detecting the start traveling condition of a vehicle, and an ignition time control means.3. The ignition time control means 3 delays the ignition time of an engine 8 when the start switch 1 is operated and the start traveling condition is detected by the start traveling detecting means 2.

Engine ignition time control device

PROBLEM TO BE SOLVED: To obtain a traction control device preventing idle rotation of a drive wheel by performing traction control in starting and widely setting freedom degree of rider operation by releasing the traction control during usual running SOLUTION: The device is used in a vehicle 60 including the drive wheel 62 to which rotation of an engine 61 is transmitted via transmission gears 66, and a throttle valve 65 varying the rotation according to an opening degree, and performs the traction control for preventing idle rotation of the drive wheel 62 The device has a predetermined period calculation means 11 calculating a predetermined period from a start beginning state of the vehicle 60, a control performance means 12 performing the traction control for the predetermined period, and a control release means 13 releasing the traction control after the predetermined period elapses The device further includes a throttle opening degree detection means 1 and sets, as the predetermined period, a period when the throttle opening degree varies from a state that it is equal to or larger than a first predetermined value to a state that it becomes equal to or smaller than a second predetermined value COPYRIGHT: (C)2010,JPO&INPIT

Traction control device

Provided is an engine control device for simplifying the operation of a vehicle when same is starting without causing a rider to experience the mental burden of canceling the starting control. An engine control device (1) is provided with: a starting determination unit (11) for determining that a vehicle (2) has started; a post-starting elapsed time gauge (12) for measuring subsequent elapsed time (Tp) when the starting determination unit (11) has determined that the vehicle (2) has started; and a starting controller (13) for adjusting the output of an engine (5), when the starting determination unit (11) has determined that the vehicle (2) has started, until the elapsed time (Tp) measured by the post-starting elapsed time gauge (12) reaches a prescribed control time (Tr) established in advance.

Engine control device

PURPOSE:To provide a traction control device which can prevent slip of the driving wheel of a motorcycle at the time of starting, can generate proper motorcycle attitude through giving an appropriate slip to the driving wheel at the time of cornering, and can enhance the cornering performance. CONSTITUTION:When a specified period has passed since the revolving speed of the rear wheel attained its threashold, the time counted by a timer in a traction stop control circuit 40 fills the set time, and the control circuit 40 opens a switch 41 provided between a traction angle retardation calculating circuit 34 and a delay angle control circuit 24, and thereafter supply of the angle delay data goes out.

Traction control device for wheel

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Traction control device for wheel