Engine
An engine is disclosed of the V-configuration having an integrated engine and transmission. The engine has a crankshaft which directly couples to drive the water pump, oil pump and transmission clutch. The water pump has a drive shaft coupled to the crankshaft that extends across the crankcase from a first to a second side. The water pump includes a housing where at least a portion is defined in the face of the crankshaft.
1. A powertrain, comprising:
a crankcase;
a cylinder having a cylinder bore;
a head positioned over the cylinder;
a crankshaft journalled in the crankcase;
a piston coupled to the crankshaft and positioned in the cylinder to reciprocate therein;
a drive gear fixedly coupled to the crankshaft and rotatable therewith; and
first, second and third driven gears in direct meshing engagement with the drive gear and driving other components of the powertrain.
2. The powertrain of claim 1 , wherein the first driven gear is drivingly coupled to a water pump.
3. The powertrain of claim 1 , wherein the second driven gear is drivingly coupled to an oil pump.
4. The powertrain of claim 1 , wherein the powertrain comprises an engine and transmission, and the third driven gear is drivingly coupled to a clutch for the transmission.
5. The powertrain of claim 1 , wherein the powertrain comprises an engine and transmission, and the transmission is positioned rearwardly of the engine, and is drivingly coupled thereto.
6. The powertrain of claim 5 , wherein the first driven gear is positioned generally above the drive gear and is drivingly coupled to a water pump.
7. The engine of claim 6 , further comprising a water pump drive shaft having a drive end and an impeller end, the drive end of the water pump shaft is positioned on a first side of the crankcase and the impeller end of the water pump shaft is positioned on a second side of the crankcase.
8. The powertrain of claim 5 , wherein the second driven gear is positioned generally forward of the drive gear and is drivingly coupled to an oil pump.
9. The powertrain of claim 5 , wherein the third driven gear is positioned generally rearward of the drive gear and is drivingly coupled to a clutch for the transmission.
10. The powertrain of claim 9 , wherein the transmission includes a first shaft coupled to the clutch and positioned generally parallel to a rotational axis of the crankshaft.
11. The powertrain of claim 10 , wherein the crankshaft and first shaft are rotatably coupled to the crankcase.
12. The engine of claim 1 , further comprising camshafts rotatably positioned in the head.
13. The engine of claim 12 , wherein the drive gear is coupled to the crankshaft at a first side of the crankcase.
14. The engine of claim 13 , further comprising a driven shaft, the driven shaft having a driven gear coupled to the drive gear.
15. The engine of claim 14 , further comprising:
a. first and second gears coupled to the driven shaft;
b. first and second chains coupled to the first and second gears; and
c. gears coupled to the camshafts and entrained with the first and second chains.
16. The powertrain of claim 1 , further comprising a water pump drive shaft operably coupled to a water pump, and the water pump drive shaft has a drive end rotatably coupled to the first driven gear and an impeller end rotatably coupled to an impeller, and the first driven gear is positioned at a first side of the crankcase and the impeller is positioned at a second, opposing end of the crankcase, and the water pump drive shaft extends between the first drive gear and the impeller.
17. A powertrain, comprising:
a crankcase;
a cylinder having a cylinder bore;
a head positioned over the cylinder;
camshafts rotatably positioned in the head;
a crankshaft journalled in the crankcase;
a piston coupled to the crankshaft and positioned in the cylinder to reciprocate therein;
a drive gear fixedly coupled to the crankshaft and rotatable therewith and wherein the drive gear is coupled to the crankshaft at a first side of the crankcase;
first, second and third driven gears in meshing engagement with the drive gear and driving other components of the powertrain;
a driven shaft having a driven gear coupled to the drive gear;
first and second gears coupled to the driven shaft;
first and second chains coupled to the first and second gears; and
gears coupled to the camshafts and entrained with the first and second chains.