Vehicle including engine stopping/starting control unit

• US 6,218,804 B1
• Filed: 12/28/1999
• Issued: 04/17/2001
• Est. Priority Date: 12/28/1998
• Status: Expired due to Term

• Current Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Original Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Inventors: Yokoo, Masahide, Nakajima, Hiroyuki, Honda, Satoshi, Yanagisawa, Takeshi, Sakamoto, Tomokazu, Toriyama, Masayuki, Iwadate, Toru
• Primary Examiner(s): Wong, Peter S.
• Assistant Examiner(s): TOATLEY, GREGORY J
• Application Number:
  US09/472,976
• Time in Patent Office: 476 Days
• Field of Search: 320/104, 320/125, 320/160, 180/65.1, 180/65.3, 180/65.4, 180/65.8, 123/198.R
• US Class Current: 320/104
• CPC Class Codes: F02N 15/006 Assembling or mounting of starting devices
• CPC Class Codes: H02J 7/1446 in response to parameters of a vehicle

Abstract

An engine stopping/starting control unit having improved accelerating performance. A charging limiting device is provided which limits the charge provided to a generator when the vehicle is stopped. The decreased charging allows for better performance when the vehicle accelerates from a stopped states. Also, the vehicle headlight can be dimmed while the vehicle is stopped, which reduces the load on the generator. An acceleration detector detects when the vehicle accelerates during running, and can decrease the generator load in response to the acceleration.

Claims

1. An engine stopping/starting control unit comprising:

a generator which is adapted to be driven by a vehicle engine;

a battery which is operatively connected to said generator to receive a charge from the generator;

a vehicle moving operation detector for detecting when the vehicle moves from a stopped state; and

a charging limiting device which is capable of selectively limiting charging of the battery by said generator.

2. The control unit of claim 1, wherein the charging limiting device reduces the charging of the battery by the generator in response to a signal from the vehicle moving operation detector.

3. The control unit of claim 1, wherein the engine stopping/starting control unit selectively interrupts ignition control of the vehicle engine during operation of the vehicle.

4. The control unit of claim 2, further comprising an acceleration detector, the acceleration detector detecting acceleration of the vehicle during movement of the vehicle, and said charging limiting device selectively limiting the charging from said generator into said battery in response to a signal from the acceleration detector.

5. The control unit of claim 1, further comprising a regulator which selectively controls a voltage outputted from said generator, the regulator limiting the charging of the battery by reducing the charging voltage applied to said battery.

6. The control unit of claim 1, further comprising:

a switch for selectively controlling the supply of power to a head lamp of said vehicle; and

a head lamp control device for selectively controlling opening/closing of said switch.

7. The control unit of claim 6, wherein when the ignition control of said engine is interrupted and said engine is stopped, said head lamp control device controls the switch to reduce the voltage applied to said head lamp.

8. The control unit of claim 6, wherein the switch includes at least one FET.

9. The control unit of claim 6, wherein the switch includes a relay.

11. The vehicle of claim 9, wherein the vehicle in operable in the following modes:

an idling restricting mode;

a starting mode; and

an idle switch mode.

13. The vehicle of claim 11, wherein when the vehicle is in the starting mode, idling is permitted after the initial start of the engine.

14. The vehicle of claim 9, wherein the charging limiting device reduces the charging of the battery by the generator in response to a signal from the vehicle moving operation detector, and wherein the engine stopping/starting control unit selectively interrupts ignition control of the vehicle engine during operation of the vehicle.

15. The vehicle of claim 9, further comprising:

a switch for selectively controlling the supply of power to a head lamp of said vehicle; and

a head lamp control device for selectively controlling opening/closing of said switch, the head lamp control device controlling the switch, wherein when the ignition control of said engine is interrupted and said engine is stopped, said head lamp control device controls the switch to reduce the voltage applied to said head lamp.

17. The method of claim 15, further comprising reducing the voltage applied to a vehicle headlight when the moving operation detector detects a stopped state.

18. The method of claim 15, further comprising:

providing an acceleration detector, and

reducing the amount of charged supplied from the generator to the battery when the acceleration detector detects acceleration of the vehicle.

10. A vehicle comprising:

an engine for providing motive power to the vehicle; and

an engine stopping/starting control unit including,

a generator which is adapted to be driven by the vehicle engine,

a battery which is operatively connected to said generator to receive a charge from the generator,

a vehicle moving operation detector for detecting when the vehicle moves from a stopped state, and

a charging limiting device which is capable of selectively limiting charging of the battery by said generator.

12. The vehicle of claim 10, wherein when the vehicle is in the idling restricting mode, when the vehicle is stopped, the engine is automatically stopped, and when the accelerator is operated while the vehicle is stopped, the engine is automatically restarted.

16. A method for controlling a vehicle electrical system comprising:

providing an engine control unit;

detecting a vehicle stopped state using a moving operation detector; and

reducing the amount of charge supplied from a generator to a battery when the moving operation detector detects the stopped state.