EP0217537A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Power generation apparatus for use with an internal combustion engine
Assignee: Hitachi Ltd
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Filing: 1986-08-27
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Granted: —
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Expires: 2006-08-27
Abstract
Abstract A turbine impeller (9) and a compressor impeller (8) of a supercharger (1) are located in an exhaust path and an inlet path, respectively, of an internal combustion engine (20i. An electrical rotary machine (MGi is formed on a rotary shaft (7) connecting the impellers. A control unit (21) determines the loading state of the engine at all times, based on engine rpm (27) and the amount (26) of fuel supplied to the engine. If the engine is overloaded, the electrical rotary machine is made to operate as a motor to assist in the supercharging of the engine. If the engine load is not excessive, the rotary machine is made to operate as a generator to supply surplus electrical energy, derived from the energy in the engine exhaust, to a storage battery (32).
Inventors
- 👤 Hideo Kawamura
- 👤 Katsuyuki Tamai
- 👤 Shigeki Saito
- 👤 Toshihiro Yamanaka
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 18:39
CPC Classifications
F; F02; F02B; F02B37/00; F02B37/12; F02B39/00; F02B39/02; F02B39/08; F02B39/10; F02B37/04; F02B37/10; F02B37/14; F02B1/00; F02B1/02; F02B1/04; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
207 words
1 . Power generation apparatus for use with an engine (20), characterised by a supercharger (1) comprising a first impeller (8) located, in use, in an intake path (11) of the engine and a second impeller (9) located, in use, in an exhaust path of the engine and coupled to a rotary shaft (7) of the first impeller; a rotary electric machine (MG) comprising a rotor (13,17) driven by the rotary shaft and a stator (15,16) mounted around the rotor; means (26) for sensing the quantity of fuel supplied to the engine; means (27) for sensing the rotational speed of the engine; and means (21) for sensing the state of loading of the engine based on the amount of fuel supplied thereto and the rotational speed of the engine and means (29,30) for controlling the electrical rotary machine so that the machine will operate as a motor when the load on the engine is determined to be greater than a predetermined value based on a signal from the loading state sensing means and so that the machine will operate as a generator when the load on the engine is determined to be smaller than the predetermined value based on the signal from the loading state sensing means.
Claim 2
Dependent Claim
207 words
1 . Power generation apparatus for use with an engine (20), characterised by a supercharger (1) comprising a first impeller (8) located, in use, in an intake path (11) of the engine and a second impeller (9) located, in use, in an exhaust path of the engine and coupled to a rotary shaft (7) of the first impeller; a rotary electric machine (MG) comprising a rotor (13,17) driven by the rotary shaft and a stator (15,16) mounted around the rotor; means (26) for sensing the quantity of fuel supplied to the engine; means (27) for sensing the rotational speed of the engine; and means (21) for sensing the state of loading of the engine based on the amount of fuel supplied thereto and the rotational speed of the engine and means (29,30) for controlling the electrical rotary machine so that the machine will operate as a motor when the load on the engine is determined to be greater than a predetermined value based on a signal from the loading state sensing means and so that the machine will operate as a generator when the load on the engine is determined to be smaller than the predetermined value based on the signal from the loading state sensing means.
Claim 3
Dependent Claim
21 words
Apparatus according to claim 1, characterised in that the electrical rotary machine (MG) is an induction motor having a squirrel-cage rotor.
Claim 4
Dependent Claim
23 words
Apparatus according to claim 1, characterised in that the electrical rotary machine (MG) is an alternating current machine having a permanent magnet rotor.
Claim 5
Dependent Claim
25 words
Apparatus according to claim 1, characterised in that supercharging of the engine (20) is assisted when the electrical rotary machine (MG) operates as a motor.
Claim 6
Dependent Claim
36 words
Apparatus according to claim 4, characterised in that the electrical rotary machine (MG) is subject to optimum control as a motor based on a signal from means (28) for sensing rotation of the electrical rotary machine.
Claim 7
Dependent Claim
26 words
Apparatus according to claim 1, characterised by means (30,31) for storing generated power in a battery (32) when the electrical rotary machine operates as a generator.
Claim 8
Dependent Claim
38 words
7 . Apparatus according to claim 6, characterised in that the electrical rotary machine (MG) is subjected to optimum control as a generator based on a signal from means (27) for sensing rotation of the electrical rotary machine.
References Cited (Backward Citations)
GB800263A
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DE2206450A1
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FR2183337A5
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DE2808147A1
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DE2951136A1
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EP0079100A1
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EP0159146A1
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