Patent US3447391A successfully refreshed from Google Patents.
US4903485A
Expired / Lapsed
US
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Muffler cooling device for V-type engine
Assignee: Kawasaki Motors Ltd
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Filing: 1988-12-08
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Granted: 1990-02-27
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Expires: 2008-12-08
Abstract
Abstract A muffler cooling device for a V-type engine which includes an engine cooling fan disposed at an end of a crankshaft. An air guide plate is provided at a part of a duct through which air sucked by the cooling fan flows, and the duct has at least one opening through which the air flows as being guided by the air guide plate. The arrangement is such that the air having flown through the opening is led, through a space surrounded by a V-bank formed by cylinder heads and an intake manifold, to an area in which a muffler and exhaust pipes extending from the cylinder heads to the muffler are arranged.
Inventors
- 👤 Shinichi Tamba
- 👤 Shigeru Nishimura
- 👤 Akio Miguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:57
CPC Classifications
F; F02; F02B; F02B75/00; F02B75/16; F02B75/18; F02B75/22; F01; F01N; F01N3/00; F01N3/02; F01N3/05; F01P; F01P1/00; F01P1/06; F01P5/00; F01P5/02; F01P5/06; F02B75/02; F02B2075/022; F02B2075/027; F02B75/007; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
86 words
A muffler cooling device for a V-type engine which includes an engine cooling fan disposed at an end of a crankshaft comprising: passage means for air sucked by said cooling fan, and means for guiding a part of the air flowing in said passage means to flow from said passage means, through a space defined by a V-bank formed by cylinder heads and an intake manifold, to an area in which a muffler and exhaust pipes extending from said cylinder heads to said muffler are arranged.
Claim 2
Dependent Claim
86 words
A muffler cooling device for a V-type engine which includes an engine cooling fan disposed at an end of a crankshaft comprising: passage means for air sucked by said cooling fan, and means for guiding a part of the air flowing in said passage means to flow from said passage means, through a space defined by a V-bank formed by cylinder heads and an intake manifold, to an area in which a muffler and exhaust pipes extending from said cylinder heads to said muffler are arranged.
Claim 3
Dependent Claim
22 words
A muffler cooling device according to claim 1, wherein said guiding means includes an air guide plate provided in said passage means.
Claim 4
Dependent Claim
29 words
A muffler cooling device according to claim 1, wherein said engine is a liquid cooled engine and said cooling fan is arranged for cooling a radiator of said engine.
Claim 5
Dependent Claim
15 words
A muffler cooling device according to claim 1, wherein said passage means includes a duct.
Claim 6
Dependent Claim
26 words
A muffler cooling device according to claim 2, wherein said passage means includes a duct and said air guide plate is formed integral with said duct.
Claim 7
Dependent Claim
28 words
A muffler cooling device according to claim 2, wherein said exhaust pipes are arranged at a location opposite to said air guide plate with respect to said V-bank.
Claim 8
Dependent Claim
24 words
A muffler cooling device according to claim 1, wherein said exhaust pipes are arranged substantially along a chassis on which the engine is mounted.
Claim 9
Dependent Claim
24 words
A muffler cooling device according to claim 6, wherein said exhaust pipes are arranged substantially along a chassis on which the engine is mounted.
Claim 10
Dependent Claim
27 words
A muffler cooling device according to claim 1 wherein said device is adapted to be used in an engine housing a carburetor located behind said intake manifold.
Claim 11
Dependent Claim
18 words
A muffler cooling device according to claim 1 wherein the crankshaft of the V-type engine is oriented vertically.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-02-26 | 1993-08-28 | 1994-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-26 | 1997-08-28 | 1998-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-26 | 2001-08-28 | 2002-02-27 | $7700.00 | Window Closed / Lapsed |