Boots – shoes – and leggings
Patent
1990-03-23
1992-02-11
Gangialosi, Salvatore
Boots, shoes, and leggings
3644241, 180179, B60K 3104
Patent
active
050880438
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
This invention relates to an engine controlling system for a vehicle which is suitable for use with an automobile.
BACKGROUND OF THE INVENTION
Conventionally, various systems for controlling an engine of a vehicle to automatically control the running speed of the vehicle have been provided. Such control may include constant speed running control, accelerated or decelerated running control or the like. Probably, for example, constant speed running control is normally executed during running at a set speed, but when the set speed is changed or when it is intended to make accelerated or decelerated running, accelerated or decelerated running control is executed.
By the way, control of an engine for such automatic control of a vehicle involves adjustment of the opening of a throttle valve of the engine so as to cause the engine to output a sufficient torque for the vehicle to run while maintaining a predetermined speed or while maintaining a predetermined acceleration.
For the adjustment of the opening of a throttle valve, it is necessary to discriminate a torque (actual torque) which is actually being outputted by an engine. Various calculating means are provided for the calculation of an actual torque. For example, an actual torque may be determined, for example, from characteristics of the engine such as an amount of intake air of the engine or a speed of rotation of the engine.
However, a calculated value of an actual torque must be a value of a torque which is actually produced at a stage of each control cycle and includes a minimum time delay. Otherwise, the responsability may possibly be deteriorated in control executed in accordance with the actual torque, and running control of the vehicle may not be executed in a desired manner.
The present invention has been made in view of such a subject as described above, and it is an object of the present invention to provide an engine controlling system for a vehicle which can calculate an actual torque having a minimum time delay to improve the responsibility in control of an engine which is executed in accordance with such actual torque.
DISCLOSURE OF THE INVENTION
In order to attain the object, according to the present invention, there is provided an engine controlling system for a vehicle, which comprises a running speed detecting means for detection a running speed of the vehicle to develop a running speed detection signal, a running condition change-over means for alternatively developing one of a constant speed running designating signal which designates constant speed running as an aimed running condition of the vehicle and an accelerated running designating signal which designates accelerated running as the aimed running condition, an aimed speed setting means for setting, when the constant speed running designating signal is received, an aimed speed at which the vehicle should make constant speed running, an aimed acceleration setting means for setting, when the accelerated running designating signal is received, an aimed acceleration with which the vehicle should make accelerated running, an aimed torque calculating means for calculating, when the constant speed running designating signal is received, an aimed output torque of an engine of the vehicle in accordance with the aimed speed but calculating, when the accelerated running designating signal is received, an aimed output torque of the engine in accordance with the aimed acceleration, an engine speed detecting means for detecting a speed of rotation of the engine to develop an engine speed detection signal, a torque converter provided between the engine and a transmission, an engine output torque detecting means for developing, as a measured value of an output power of the engine, an output torque of the torque converter calculated from the engine speed detection signal and a value preset in accordance with characteristics of the converter, an engine output adjusting means for adjusting the output power of the engine, a control amount setting means for setting a co
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patent: 4698762 (1987-10-01), Moriya et al.
patent: 4833612 (1989-05-01), Okuno et al.
patent: 4884203 (1989-11-01), Preis et al.
patent: 4938604 (1990-07-01), Naito et al.
patent: 4956778 (1990-09-01), Naito
patent: 4982805 (1991-01-01), Naitou et al.
Akishino Katsuo
Hirako Osamu
Shimada Makoto
Gangialosi Salvatore
Mitsubishi Jidosha Kogyo Kabushiki Kaisha
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