EP0233079A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Apparatus for recovering thermal energy from an engine
Assignee: Isuzu Motors Ltd
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Filing: 1987-02-10
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Granted: —
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Expires: 2007-02-10
Abstract
Abstract An apparatus for recovering thermal energy from an engine (1) of a motor vehicle has a first rotary electric machine (5) coupled to a turbocharger (4) mounted on the engine (1), a second rotary electric machine (7) coupled to an exhaust turbine (6) disposed in an exhaust system (3) of the engine, and a third rotary electric machine (9) mounted on an axle (8) of the motor vehicle. The apparatus also includes respective means for detecting the engine rotational speed (1a), the engine load (1 b) and the engine boost pressure (2a). The first, second, and third rotary electric machines are controlled by a controller (10) on the basis of signals from the means (1 a, 1 b, 2a) for effective utilisation of the energy of an exhaust gas discharged from the engine.
Inventors
- 👤 Hideo Kawamura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 08:20
CPC Classifications
B; B60; B60K; B60K6/00; B60K6/20; B60K6/22; B60K6/24; B60K1/00; B60K3/00; B60K3/04; B60K6/26; B60K6/42; B60K6/48; B60T; B60T1/00; B60T1/02; B60T1/10; B60W; B60W10/00; B60W10/04; B60W10/08; F; F02; F02B; F02B37/00; F02B37/005; F02B37/04; F02B37/12; F02B37/14; F02B39/00; F02B39/02; F02B39/08; F02B39/10; B60K7/00; B60K7/0007; B60Y; B60Y2400/00; B60Y2400/43; B60Y2400/435; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y02T10/60; Y02T10/62; Y10; Y10S; Y10S903/00; Y10S903/902; Y10S903/903; Y10S903/904; Y10S903/905; Y10S903/906
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
169 words
Apparatus for recovering thermal energy from an engine (1) mounted on a motor vehicle, comprising: a first rotary electric machine (5) coupled to a rotatable shaft (41) of a turbocharger (4) mounted on the engine (1); a second rotary electric machine (7) coupled as a generator to a rotatable shaft (61) of an exhaust turbine (6) disposed in an exhaust system (3) of the engine; a third rotary electric machine (9) mounted on an axle (8) of the motor vehicle; a battery (11) for storing electric power generated by said first, second, and third rotary machines (5, 7, 9); means (1a) for detecting the rotational speed of the engine (1) ; means (lb) for detecting the load on the engine (1); means (2a) for detecting the boost pressure of .the engine; and, a controller (10) for controlling said first, second, and third rotary machines (5, 7, 9) in dependence on the rotational speed, load, and boost pressure of the engine as detected by the respective means (la, lb, 2a).
Claim 2
Dependent Claim
169 words
Apparatus for recovering thermal energy from an engine (1) mounted on a motor vehicle, comprising: a first rotary electric machine (5) coupled to a rotatable shaft (41) of a turbocharger (4) mounted on the engine (1); a second rotary electric machine (7) coupled as a generator to a rotatable shaft (61) of an exhaust turbine (6) disposed in an exhaust system (3) of the engine; a third rotary electric machine (9) mounted on an axle (8) of the motor vehicle; a battery (11) for storing electric power generated by said first, second, and third rotary machines (5, 7, 9); means (1a) for detecting the rotational speed of the engine (1) ; means (lb) for detecting the load on the engine (1); means (2a) for detecting the boost pressure of .the engine; and, a controller (10) for controlling said first, second, and third rotary machines (5, 7, 9) in dependence on the rotational speed, load, and boost pressure of the engine as detected by the respective means (la, lb, 2a).
Claim 3
Dependent Claim
61 words
.2. Apparatus according to Claim 1, wherein said controller (10) comprises means for controlling said first rotary electric machine (5) to operate as a generator, means for controlling said second rotary electric machine (7) and means for charging said battery .(11) with electric power generated by said first and second rotary electric machines (5, 7) while the engine (1) is idling.
Claim 4
Dependent Claim
41 words
An apparatus according to claim 2, wherein said means for controlling said first rotary machine to operate as a generator has means for controlling a generator load such that a turbine of said turbocharger will be operated with an optimum efficiency.
Claim 5
Dependent Claim
57 words
An apparatus according to claim 1, wherein said controller comprises means for controlling said first and third rotary machines to operate as generators, means for controlling said second rotary machine, and means for charging said battery with electric power generated by said first, second, and third rotary machines, while the motor vehicle is subjected to engine braking.
Claim 6
Dependent Claim
38 words
An apparatus according to claim 1, wherein said controller has means for controlling said first rotary machine to operate as a motor energized by electric power from said battery while the engine is subjected to a medium load.
Claim 7
Dependent Claim
37 words
An apparatus according to claim 5, wherein said means for controlling said first rotary machine to operate as a motor has means for controlling electric power supplied to said first rotary machine according to the boost pressure.
Claim 8
Dependent Claim
72 words
An apparatus according to claim 1, wherein said controller comprises means for controlling said first rotary machine to operate as a motor energized by electric power from said battery, means for controlling said second rotary machine, and means for controlling said third rotary machine to operate as a motor energized by electric power generated by said second rotary machine, while the engine is rotating at a low speed under a high load.
Claim 9
Dependent Claim
31 words
An apparatus according to claim 7, wherein said means for controlling said first rotary machine has means for supplying electric power to said first rotary machine according to the boost pressure.
Claim 10
Dependent Claim
55 words
An apparatus according to claim 1, wherein said controller has means for controlling said third rotary .machine to operate as a motor energized by electric power generated by said second rotary machine when the boost pressure is higher than a prescribed value while the engine is rotating at a low speed under a high load.
Claim 11
Dependent Claim
34 words
An apparatus according to claim 1, wherein .said means for controlling said second rotary machine has menas for controlling a generator load such that said exhaust turbine will be operated with an optimum efficiency.
Claim 12
Dependent Claim
64 words
An apparatus according to claim 1, wherein said controller comprises means for controlling said first rotary machine to operate as a generator, means for controlling said second rotary machine, and means for controlling said third rotary machine to operate as a motor energized by electric power generated by said first and second rotary machines while the engine is being subjected to a low load.
Claim 13
Dependent Claim
41 words
An apparatus according to claim 11, wherein said means for controlling said first rotary machine to operate as a generator has means for controlling a generator load such that a turbine of said turbocharger will be operated with an optimum efficiency.
Claim 14
Dependent Claim
34 words
An apparatus according to claim 11, wherein said means for controlling said second rotary machine has menas for controlling a generator load such that said exhaust turbine will be operated with an optimum efficiency.
References Cited (Backward Citations)
No citation records indexed.
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