Claims
- 1. A crankshaft for an internal combustion engine having an engine block, comprising:
- a crankshaft offset portion for operably engaging a piston connecting rod;
- an output portion for engaging a powered device;
- a crankshaft pump portion including a cam lobe for actuating a pump piston for pumping a fluid, said crankshaft offset portion, said output portion, and said crankshaft pump portion being formed integral and in one-piece.
- 2. The crankshaft as set forth in claim 1 wherein said crankshaft pump portion further includes a cam lobe distal surface at a relatively larger radius and a cam lobe proximate surface at a relatively lesser radius.
- 3. The crankshaft as set forth in claim 2 wherein said crankshaft pump portion further includes a plurality of said cam lobe distal surfaces and said cam lobe proximate surfaces.
- 4. The crankshaft as set forth in claim 3 wherein said crankshaft pump portion is disposed within said engine block.
- 5. The crankshaft as set forth in claim 3 wherein said crankshaft pump portion extends from said engine block.
- 6. An engine block having a cylinder wall for an internal combustion engine, said engine block comprised of:
- a means for rotationally securing a crankshaft in said engine block;
- an integral pump including a pump piston for pumping a fluid;
- the crankshaft rotationally secured in said crankshaft securing means; said crankshaft including:
- a crankshaft offset portion for operably engaging a piston connecting rod;
- an output portion for engaging a powered device;
- a crankshaft pump portion including a cam lobe for reciprocally actuating said pump piston, said crankshaft offset portion, said output portion, and said crankshaft pump portion being formed integral and in one-piece.
- 7. The engine block as set forth in claim 6 wherein said crankshaft pump portion further includes a cam lobe distal surface at a relatively larger radius and a cam lobe proximate surface at a relatively lesser radius.
- 8. The engine block as set forth in claim 7 wherein said crankshaft pump portion further includes a plurality of said cam lobe distal surfaces and said cam lobe proximate surfaces.
- 9. The engine block as set forth in claim 8 wherein said integral pump further includes a pump actuator in sliding engagement with said cam lobe surface.
- 10. The engine block as set forth in claim 9 wherein said pump piston has a stroke.
- 11. The engine block as set forth in claim 10 wherein the stroke of the pump piston is equal to the difference between the relatively larger radius of the cam lobe distal surface and the relatively lesser radius of the cam lobe proximate surface.
- 12. The engine block as set forth in claim 11 wherein the integral pump further includes a pump housing having a pump cylinder wall therein.
- 13. The engine block as set forth in claim 12 wherein the pump piston is operably disposed in said pump cylinder wall for reciprocal operation therein.
- 14. The engine block as set forth in claim 7 wherein said integral pump is a pump unit.
- 15. The engine block as set forth in claim 14 wherein said pump unit further includes at least one pump unit.
- 16. The engine block as set forth in claim 15 wherein said pump unit further includes a reciprocally operable pump piston.
- 17. The engine block as set forth in claim 16 wherein said pump piston is reciprocally operable through a pump stroke.
- 18. The engine block as set forth in claim 17 wherein said pump unit further includes an inlet valve subassembly for permitting an intake of fluid.
- 19. The engine block as set forth in claim 18 wherein said pump unit further includes an outlet valve for permitting an outflow of pumped fluid from said pump unit.
- 20. The engine block as set forth in claim 14 wherein said pump includes a plurality of pump units.
- 21. The engine block as set forth in claim 20 wherein said pump units are radially disposed about the crankshaft pump portion.
- 22. The engine block as set forth in claim 21 wherein each said pump unit further includes a reciprocally operable pump piston.
- 23. The engine block as set forth in claim 22 wherein each said pump piston is reciprocally operable through a pump stroke.
- 24. The engine block as set forth in claim 23 wherein each said pump unit further includes an inlet valve subassembly for permitting an intake of fluid.
- 25. The engine block as set forth in claim 24 wherein each said pump unit further includes an outlet valve for permitting an outflow of pumped fluid from said pump unit.
CROSS REFERENCE TO RELATED APPLICATIONS
This application is based, in part, on the material disclosed in U.S. provisional patent application Ser. No. 60/034,826 filed Dec. 19, 1996.
US Referenced Citations (16)
Foreign Referenced Citations (1)
Number |
Date |
Country |
590 362A1 |
Aug 1993 |
EPX |