Apparatus for the automatic starting running, and stopping of an internal combustion engine

• US 5,072,703 A
• Filed: 10/16/1990
• Issued: 12/17/1991
• Est. Priority Date: 10/16/1990
• Status: Expired due to Term

• Current Assignee: Trans TRON Limited Incorporated
• Original Assignee: Thermo King Corporation (Trane Technologies plc)
• Inventors: Sutton, Loran W.
• Primary Examiner(s): Dolinar, Andrew M.
• Application Number:
  US07/600,406
• Time in Patent Office: 427 Days
• Field of Search: 123/179 B, 123/179 BG, 123/179 A, 123/179 R, 307/10.6, 307/10.7
• US Class Current: 123/179.4
• CPC Class Codes: F02N 11/0803 characterised by means for initiating engine start or stop F02N11/0814 takes precedence

Abstract

Apparatus for the automatic starting, running and stopping of an internal combustion engine. Designed primarily for automotive applications, this invention provides significant improvements in convenience, safety, and reliability as compared to current state of the art engine controller designs. Included are means of automatic activation for ease of operation, means of automatic deactivation to insure safety, and means of automatically initiating an engine start sequence or disregarding an engine shutdown request in order to avoid a low probability of restart condition. Means are also provided for the actuation of fuel supply means, actuation of the starter, and actuation of accessories as with any automatic engine starting device.

Claims

1. An apparatus for maintaining a comfortable truck sleeper unit temperature of a truck having a truck engine, and reducing idling time of the truck engine, comprising:

temperature sensing means within said truck sleeper unit,

means for starting, running and stopping the truck engine in accordance with said temperature sensing means thereby supplying heating or cooling only as needed,

means for detecting when said truck is safely parked and idling,

means for automatically enabling said starting means after said means for detecting when said truck is safely parked and idling indicates said truck has been safely parked and idling for a predetermined amount of time,

and means for automatically disabling said starting, running, and stopping means.

2. The apparatus of claim 1, wherein said means detecting when said truck is safely parked and idling comprises a parking brake switch, a neutral switch, a hood switch, an oil pressure switch, and a truck ignition switch.

3. The apparatus of claim 2 wherein said oil pressure switch is used for starter lock out purposes.

4. The apparatus of claim 2 wherein said temperature sensing means within said sleeper unit is an adjustable thermostat.

5. The apparatus of claim 1 wherein the truck includes a battery, and including means for detecting when the battery voltage level is below a predetermined value, and including means for initiating an engine start sequence in response to the battery voltage level being below said predetermined value.

6. The apparatus of claim 1 including ambient temperature sensing means, and means for initiating an engine start sequence in response to predetermined ambient temperatures.

7. The apparatus of claim 6 wherein the ambient temperature sensing means is a bimetallic temperature switch.

8. The apparatus of claim 1 including means for predicting when the engine cranking speed will be below a predetermined value, and means responsive to said predicting means for initiating an engine start sequence in response to the predicted cranking speed being below said predetermined value.

9. The apparatus of claim 8 wherein the means for predicting engine cranking speed includes battery energy estimation means and cranking energy requirement estimation means.

10. The apparatus of claim 9 wherein said battery energy estimation means includes battery electrolyte temperature sensing means.

11. The apparatus of claim 9 wherein said cranking energy requirement estimation means includes engine lubricating oil temperature sensing means.

12. The apparatus of claim 1 wherein the truck includes a battery, and including means for detecting when the battery voltage level is below a predetermined value, and means responsive to said detecting means for providing a continuous idle condition in response to the battery voltage level being below said predetermined value.

13. The apparatus of claim 12 wherein the means for detecting battery voltage level comprises truck electrical system voltage monitoring means.

14. The apparatus of claim 1 including ambient temperature sensing means, and means for providing a continuous idle condition in response to predetermined ambient temperatures.

15. The apparatus of claim 14 wherein the ambient temperature sensing means is a bimetallic switch.

16. The apparatus of claim 1 including means for predicting when engine cranking speed will be below a predetermined value, and means responsive to said predicting means for providing a continuous idle condition when the predicted cranking speed is below said predetermined value.

17. The apparatus of claim 16 wherein the means for predicting cranking speed includes battery energy estimation means and cranking energy requirement estimation means.

18. The apparatus of claim 1 including means for detecting when the engine cranking speed is below a predetermined value, and means responsive to said detecting means for providing a continuous idle condition when the cranking speed is below said predetermined value.

19. The apparatus of claim 1 including means for running the truck engine for a predetermined minimum period of time when the means for starting, running, and stopping the truck engine starts the engine.

20. The apparatus of claim 1, wherein the means for detecting when the truck is safely parked and idling includes a parking brake switch.

21. The apparatus of claim 1 wherein the means for detecting when the truck is safely parked and idling includes a neutral switch.

22. The apparatus of claim 1 wherein the means for detecting when the truck is safely parked and idling includes a hood switch.

23. The apparatus of claim 1 wherein the means for detecting when the truck is safely parked and idling includes an oil pressure switch.

24. The apparatus of claim 1 wherein the means for detecting when the truck is safely parked and idling includes a truck ignition switch.

25. The apparatus of claim 1 wherein the truck includes a battery, and including means for predicting engine cranking speed as a function of engine and battery temperatures, with said predicting means initiating an engine start sequence, when the engine is stopped, and maintaining engine idle, when it is running, when the predicting means predicts a cranking speed below a predetermined value.