Internal combustion engine and devices employing same

• US 4,862,981 A
• Filed: 07/08/1987
• Issued: 09/05/1989
• Est. Priority Date: 12/24/1984
• Status: Expired due to Term

• Current Assignee: Deere & Company, Kawasaki Jukogyo Kabushiki Kaisha KOBE Japan
• Original Assignee: Deere & Company, Kawasaki Jukogyo Kabushiki Kaisha (Kawasaki Heavy Industries Limited)
• Inventors: Miyake, Hitomi, Tomonaga, Keisuke, Tamba, Shinichi, Fujikawa, Tetsuzo
• Primary Examiner(s): Marmor, Charles A.
• Assistant Examiner(s): Camby, Richard
• Application Number:
  US07/071,019
• Time in Patent Office: 790 Days
• Field of Search: 180/68.1, 180/68.4, 180/68.6, 180/291, 180/292, 180/294, 180/298, 180/900, 123/41.49, 123/41.66, 123/196 W, 123/10.1, 56/14.7, 56/DIG. 22
• US Class Current: 180/68.4
• CPC Class Codes: B60K 11/00 Arrangement in connection with cooling of propulsion units heating the interior space B60H; cooling internal combustion engines per se F01P
• CPC Class Codes: B60K 5/10 providing for ready detachment of engine
• CPC Class Codes: F01P 3/18 Arrangements or mounting of liquid-to-air heat-exchangers such arrangements on cylinders or cylinder heads F01P3/04; relative to vehicles B60K11/04
• CPC Class Codes: F02B 1/04 with fuel-air mixture admission into cylinder
• CPC Class Codes: F02B 2075/027 four
• CPC Class Codes: F02B 75/007 having vertical crankshafts
• CPC Class Codes: F02B 75/22 with cylinders in V, fan, or star arrangement
• CPC Class Codes: F02F 7/006 Camshaft or pushrod housings
• CPC Class Codes: Y10S 180/90 Argicultural-type tractors

Abstract

An engine and power units employing the engine are provided which include a crankshaft oriented vertically and operatively connected to the engine, a liquid-cooled radiator arranged above the engine substantially perpendicular to the crankshaft, and a cooling fan interposed between the engine and the radiator and operatively connected to the crankshaft. The engines and power units may be employed in motor vehicles and other equipment such as electrical generators.

Claims

1. A power unit comprising:

an engine;

a vertically oriented crankshaft operatively connected to said engine;

a radiator, operatively positioned above and substantially perpendicular to said crankshaft; and

a cooling fan, operatively connected to said crankshaft, interposed between said engine and said radiator.

2. The power unit according to claim 1 wherein said engine is of a V-type.

5. The power unit according to claim 1, further comprising an air exhaust duct interposed between said radiator and said engine.

6. The power unit according to claim 5 wherein said air exhaust duct further includes a fan shroud formed integrally with the air exhaust duct.

7. The power unit according to claim 5 wherein said air exhaust duct has at least one outlet port facing radially outwardly of a horizontal plane.

8. The power unit according to claim 5 wherein said air exhaust duct comprises an upper duct portion operatively connected to a lower duct portion.

9. The power unit according to claim 5 wherein said air exhaust duct includes a carburetion air cleaner formed integrally with said exhaust duct.

18. The power unit according to claim 1 wherein said cooling fan is mounted on the end of said crankshaft adjacent said radiator.

26. The power unit according to claim 1 further comprising enclosure means having an inlet and exhaust means formed therein for housing said engine, said radiator, and said cooling fan.

3. A power unit comprising:

an engine;

a vertically oriented crankshaft driven by said engine;

a radiator located in the vicinity of and supported by said engine; and

a cooling fan, operatively connected to said crankshaft, interposed between said engine and said radiator.

4. The power unit according to claim 3 wherein said engine is of a V-type.

19. The power unit according to claim 3 wherein said cooling fan is mounted on the end of said crankshaft adjacent said radiator.

10. A motor vehicle having an engine enclosure comprising:

a crankshaft oriented vertically;

an engine driving said crankshaft;

a liquid-cooled radiator positioned above and supported by said engine substantially perpendicular to said crankshaft in a space defined by said enclosure; and

a cooling fan interposed between said engine and said radiator and directly connected to said crankshaft.

11. A motor vehicle according to claim 10 wherein said engine is of a V-type.

12. A motor vehicle according to claim 10 wherein said enclosure has a top wall, a front wall and side walls and cooling air currents for cooling said radiator are introduced into the space defined by the enclosure through one of said walls of the enclosure and released into the atmosphere through said front wall of the enclosure after cooling the radiator.

13. The motor vehicle of claim 10 further comprising exhaust means, operatively connected to said radiator and said engine, for directing air pulled by said fan through said radiator toward the bottom of said enclosure and outside said enclosure such that the force created by said directed air reduces the amount of debris entering said enclosure from said bottom.

14. A motor vehicle having an engine enclosure comprising:

a crankshaft oriented vertically;

an engine driving said crankshaft;

a liquid-cooled radiator positioned above and supported by said engine substantially perpendicular to said crankshaft in a space defined by said enclosure;

a cooling fan interposed between said engine and said radiator and directly connected to said crankshaft; and

an air exhaust duct for guiding warm air emanating from the vicinity of said radiator away from the engine, without coming in contact therewith.

15. A motor vehicle as claimed in claim 14 wherein said air exhaust duct is split into an upper duct portion and a lower duct portion, and further comprising a carburetion air cleaner split into an upper case portion and a lower case portion, said lower case portion of said cleaner being formed integrally with the upper duct portion of said air exhaust duct, and a suction passageway extending from said air cleaner to said engine through said air exhaust duct.

16. A motor vehicle as claimed in claim 14 comprising a fan shroud formed integrally with the exhaust duct.

17. A motor vehicle as claimed in claim 16 wherein said air exhaust duct comprises an upper duct portion operatively connected to a lower duct portion.

22. The motor vehicle according to claim 17 wherein said enclosure includes top, front, and side walls and said upper and lower duct portions are defined by said enclosure and a partition which extends between said fan shroud and the walls of said enclosure.

23. The motor vehicle according to claim 22 wherein said partition includes a front partition portion extending horizontally between said fan shroud and said front wall of said enclosure and a rear partition portion extending rearwardly and upwardly between said fan shroud and said top wall of said enclosure.

20. A power unit comprising:

an engine;

a vertically oriented crankshaft operatively connected to said engine;

a radiator, operatively positioned above and substantially perpendicular to said crankshaft;

a cooling fan, operatively connected to said crankshaft, interposed between said engine and said radiator; and

means, operatively connected to said engine and said radiator, for supporting said radiator in position above said engine.

21. The power unit according to claim 20, further comprising enclosure means having air inlet and exhaust means formed therein for housing said engine, said radiator, and said cooling fan.

24. The power unit according to claim 20 wherein said supporting means comprises at least two brackets, each having one end thereof operatively connected to said engine and to said radiator.

25. The power unit according to claim 20 wherein at least four brackets are utilized to operatively connect said engine to said radiator.