Claims
- 1. A warning system for a watercraft engine incorporating pressure fed lubrication for the moving parts of the engine comprising:
an oil pan within said engine, an oil pump having an inlet connected to said oil pan and an outlet dispersing oil throughout said engine to lubricate the moving parts of said engine, an oil pressure detector responsively coupled to detect the pressure of said pressurized oil, a timer setting a plurality of predetermined successively shorter time periods To, T1 and T2, an alarm programmed computer responsively coupled to said oil pressure detector and said timer and operatively coupled to actuate said alarm after a predetermined period of time proportional to the detected oil pressure, said alarm triggered at the end of time period To when the detected oil pressure drops to Po, said alarm triggered at the end of time period T1 which is less than To when the detected oil pressure drops to P1 which is lower than Po, and said alarm triggered at the end of time period T2 which is less than To and T1 when the detected oil pressure drops to P2 which is lower than P1.
- 2. The warning system of claim 1, wherein To is about 1 second, T1 is about 0.5 seconds, and T2 is about 0.2 seconds.
- 3. The warning system of claim 2, wherein Po is about 350 kpa, P1 is about 300 kpa, and P2 is about 250 kpa.
- 4. A warning system for a watercraft engine incorporating pressure fed lubrication for the moving parts of the engine comprising:
an oil pan within said engine, an oil pump having an inlet connected to said oil pan and an outlet dispersing oil throughout said engine to lubricate the moving parts of said engine, an oil pressure detector responsively coupled to detect the pressure of said pressurized oil, a timer setting a plurality of predetermined time periods, an alarm, a programmed computer responsively coupled to said oil pressure detector and said timer and operatively coupled to actuate said alarm after a predetermined period of time proportional to the detected oil pressure.
- 5. A warning system for a watercraft engine incorporating pressure fed lubrication for the moving parts of the engine comprising:
an oil pressure detector responsively coupled to detect the pressure of said pressurized oil, a timer setting a plurality of predetermined time periods, and an alarm, a programmed computer responsively coupled to said oil pressure detector and said timer and operatively coupled to actuate said alarm after a predetermined period of time proportional to the detected oil pressure.
- 6. A marine engine oil pressure warning system comprising:
an oil pressure detector coupled to a marine engine lubrication system, an electronic control unit (ECU) coupled to said detector, a timer and an alarm coupled to said ECU whereby said alarm is responsive to predetermined oil pressure values and predetermined time intervals.
- 7. The marine engine oil pressure warning system of claim 6, wherein said electronic control unit stores at least one predetermined oil pressure value.
- 8. The marine engine oil pressure warning system of claim 6, wherein said electronic control unit determines engine speed.
- 9. The marine engine oil pressure warning system of claim 8, wherein said predetermined oil pressure values are derived according to engine speed and said oil pressure detector.
- 10. The marine engine oil pressure warning system of claim 7, wherein said oil pressure values are measured simultaneously.
- 11. The marine engine oil pressure warning system of claim 6, wherein said timer is set to time intervals dependent on corresponding oil pressure limits.
- 12. The marine engine oil pressure warning system of claim 11, wherein said time intervals vary in length depending on the detected oil pressure value.
- 13. The marine engine oil pressure warning system of claim 11, wherein said time intervals are longer for a detected high oil pressure.
- 14. The marine engine oil pressure warning system of claim 11, wherein said time intervals are shorter for a detected low oil pressure.
- 15. The marine engine oil pressure warning system of claim 6, wherein said alarm provides an acoustical signal.
- 16. The marine engine oil pressure warning system of claim 6, wherein said alarm provides a visual signal.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2001-132607 |
Apr 2001 |
JP |
|
PRIORITY INFORMATION
[0001] This application is based on and claims priority to Japanese Patent Application No. 2001-132607, filed Apr. 27, 2001 and to the Provisional Application No. 60/322239, filed Sep. 13, 2001, (Attorney Docket No. FS.20014US0PR) the entire contents of which is hereby expressly incorporated by reference.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60322239 |
Sep 2001 |
US |