Patent EP0272680A2 successfully refreshed from Google Patents.
EP0272680A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Turbo compound engine
Assignee: Isuzu Motors Ltd
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Filing: 1987-12-22
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Granted: —
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Expires: 2007-12-22
Abstract
Abstract A turbo compound engine including driving power transmission means for drivingly connecting a crankshaft of the engine to a power turbine provided in an exhaust gas passage, so as to secure an adequate breaking force which is relatively weakened by an improvement in engine performance, by activating a power turbine by means of the driving power transmission means during exhuast breaking, thereby transforming the work of the power turbine to breaking force of the crankshaft in order to increase the entire breaking force of the engine.
Inventors
- 👤 Masaki Kawasaki Factory Okada
- 👤 Keiji Kawasaki Factory Kishishita
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 21:29
CPC Classifications
F; F02; F02B; F02B37/00; F02B37/004; F02B37/005; F02B41/00; F02B41/02; F02B41/10; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
112 words
(1) A turbo compound engine comprising: an engine having an exhaust gas passage and a crankshaft; a power turbine disposed in said exhaust passage so as to recover the exhaust gas energy; driving power transmission means for drivingly connecting said power turbine and said crankshaft so as to transmit to said power turbine said driving power of a revolution speed below over rotative speed of said power turbine; a fluid passage connected to a portion of said exhaust passage which lies between said power turbine and said engine; and a fluid passage switching means for closing said exhaust passage upstream of said fluid passage while opening said fluid passage during exhaust braking.
Claim 2
Dependent Claim
64 words
(2) The turbo compound engine according to claim 1, wherein said driving power transmission means includes gear train means for connecting said crankshaft and said power turbine, said gear train means including a plurality of gear trains with a gear ratio of each gear train being set to a value so as to prevent said power turbine from rotating over its over rotative speed.
Claim 3
Dependent Claim
23 words
(3) The turbo compound engine according to claim 2, wherein said gear train means includes a plurality of gear trains and fluid clutches.
Claim 4
Dependent Claim
46 words
(4) The turbo compound engine according to claim 1, wherein one end of said fluid passage is connected to the exhaust passage upstream of said power turbine, and the other end of said fluid passage is connected to the exhaust passage downstream of said power turbine.
Claim 5
Dependent Claim
73 words
(5) The turbo compound engine according to claim 1. wherein said driving power transmission means includes reversing gear trains that transmit said driving power from said crankshaft to said power turbine when the exhaust brake is operating, and normal rotation gear trains that transmit said driving power from said power turbine to said crankshaft during normal operation, with the gear ratio of the former gear trains being smaller than that of the latter
Claim 6
Dependent Claim
36 words
(6) The turbo compound engine according to claim 5, wherein said normal rotation gear trains and said reversing gear trains are respectively provided so as to transmit said driving power through fluid clutches and electromagnetic clutches.
Claim 7
Dependent Claim
68 words
(7) The turbo compound engine according to claim 1, wherein said fluid passage switching means includes a switching valve that closes said exhaust passes upstream of said fluid passage while opens said fluid passage to a predetermined aperture when the exhaust brake is operating and the driving power is transmitted from said crankshaft to said power turbine, and also includes a driving mechanism for driving said switching valve.
Claim 8
Dependent Claim
100 words
(8) The turbo compound engine according to claim 7, wherein said switching valve includes a rotary valve having a first port whose diameter is equal to that of said exhaust passage, as well as a second port whose diameter is smaller than that of said fluid passage, said switching valve being constructed so as to be activated by said driving mechanism in order to connect said second port to said fluid passage, thereby disconnecting said first port from said exhaust passage when the exhaust brake operates and the driving power is being transmitted from said crankshaft to said power turbine.
References Cited (Backward Citations)
No citation records indexed.
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