Vehicle starting method

• US 4,321,522 A
• Filed: 03/26/1980
• Issued: 03/23/1982
• Est. Priority Date: 03/26/1980
• Status: Expired due to Term

• Current Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
• Original Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
• Inventors: Matsunaga, Iwao
• Primary Examiner(s): HICKEY, ROBERT
• Application Number:
  US06/134,306
• Time in Patent Office: 727 Days
• Field of Search: 320/2, 320/35, 320/36, 320/7, 320/15, 290/50, 219/202, 219/209, 219/205, 307/10 R, 307/48 X
• US Class Current: 320/112
• CPC Class Codes: F02N 11/0866 comprising several power sources, e.g. battery and capacitor or two batteries
• CPC Class Codes: F02N 11/14 Starting of engines by means of electric starters with external current supply F02N11/12 takes precedence
• CPC Class Codes: F02N 19/00 Starting aids for combustion engines, not otherwise provided for
• CPC Class Codes: Y10S 320/34 Robot, hybrid, recreational or emergency vehicle

Abstract

A method of starting the engine of a vehicle, such as an automobile, over a wide range of ambient temperatures, such as in cold temperatures below 32° F. and warm temperatures above 32° F. The method includes the steps of energizing the starter motor of the vehicle from the vehicle battery only and starting the vehicle at warm temperatures, and providing an auxiliary battery connected in combination with the vehicle battery for starting the vehicle at cold temperatures. The invention comprehends maintaining the auxiliary battery warm separate from the vehicle during low ambient temperature conditions when the vehicle is not in use. Alternatively, the invention comprehends utilizing a small, low capacity battery which may be incapable of starting the vehicle when the battery is at the cold temperature, but which may itself start the vehicle when the battery is at warm temperatures. The invention comprehends providing such a battery is a lightweight, readily installable and disconnectable form so as to permit maintaining the battery warm when the ambient temperatures are below 32° F. The invention further comprehends the provision of apparatus for use in carrying out the above discussed methods.

Claims

1. The method of starting the engine of a vehicle over a wide range of ambient temperatures including cold temperatures such as below 32°

F., and warm temperatures, such as 32°

F., and above, said vehicle having an electrically operated starter motor and an effectively permanently installed battery for energizing the starter motor, said method comprising the steps of;

energizing the starter motor from said battery only to start the vehicle at warm temperatures;

providing a small auxiliary battery;

warming said auxiliary battery separate from the vehicle during cold ambient temperature conditions when the vehicle is not in use;

installing the warm auxiliary battery in the vehicle to augment the permanently installed battery to energize the starter motor under said cold ambient temperature conditions;

causing the auxiliary battery to be maintained at a warm temperature separate from the vehicle during cold ambient temperature conditions again subsequent to discontinuation of use of the vehicle; and

repeating said last two steps during subsequent periods of use and nonuse of the vehicle during cold ambient temperature conditions.

2. The method of starting the engine of a vehicle of claim 1 wherein the auxiliary battery is caused to be charged while being warmed separate from the vehicle.

3. The method of starting the emngine of a vehicle of claim 1 wherein said vehicle defines a passenger space and said battery is installed in the vehicle at said passenger space for facilitated installation and removal in effecting the selective use thereof.

4. The method of starting the engine of a vehicle of claim 1 wherein said auxiliary battery is connected in parallel with said permanently installed vehicle battery during use thereof in the vehicle.

5. The method of starting the engine of a vehicle of claim 1 wherein said vehicle defines a trunk space and said battery is installed in the vehicle in said trunk space for facilitated installation and removal in effecting the selecting use thereof.

6. The method of starting the engine of a vehicle over a wide range of ambient temperatures including cold temperatures such as below 32°

F., and warm temperatures such as 32°

F., and above, said vehicle having an electrically operated starter motor, said method comprising the steps of;

providing a battery having a capacity preselected to energize the starter motor to start the vehicle substantially only when the battery is at a warm temperature;

maintaining said battery warm separate from the vehicle during cold ambient temperature conditions when the vehicle is not in use;

installing the warm battery in the vehicle to energize the starter motor under said cold ambient temperature conditions;

causing the battery to be warmed during use of the vehicle and to be maintained at a warm temperature separate from the vehicle during cold ambient ambient temperature conditions again subsequent to discontinuation of use of the vehicle; and

repeating said last two steps during subsequent periods of use and nonuse of the vehicle during cold ambient temperature conditions.