Patent EP0210833A2 successfully refreshed from Google Patents.
EP0210833A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Control system for a supercharged internal combustion engine
Assignee: Isuzu Motors Ltd
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Filing: 1986-07-23
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Granted: —
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Expires: 2006-07-23
Abstract
Abstract A supercharger (1) associated with an internal combustion engine (20) has a rotatable shaft (7) on which there is mounted a rotary electric machine (MG) which is operable as an electric motor or as an electric generator. When the motor vehicle driven by the internal combustion engine is braked, the rotary machine is operated as a loaded generator to enable the supercharger turbine to act as a load on the exhaust manifold (21) of the engine, thereby increasing the force of exhaust braking. If the motor vehicle is to be further decelerated, the rotary machine is operated as a motor to reverse the direction of rotation of the turbine impeller for further increasing the load on the exhaust manifold to add to the exhaust braking force. While the rotary machine is being operated as a generator, electric power generated thereby may be used to charge a battery (32). When the rotary machine is operated as a motor, the stored electric power is supplied from the battery to the rotary machine. If the engine is running at a low speed, the rotary machine may be operated as a motor for driving the turbine and the compressor in the normal direction at a higher speed, thereby increasing the air feed to the engine.
Inventors
- 👤 Hideo Kawamura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 04:15
CPC Classifications
F; F02; F02D; F02D9/00; F02B; F02B37/00; F02B37/04; F02B37/10; F02B37/005; F02B37/12; F02B37/14; F02B39/00; F02B39/02; F02B39/08; F02B39/10; F02D23/00; F02D23/02; F02B3/00; F02B3/06; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
98 words
A control system for controlling an internal combustion engine (20) fitted with a supercharger (1), characterised by a rotary electric machine (MG) coupled to the supercharger; means (30) for ascertaining whether exhaust braking is to be imposed on the engine when a motor vehicle driven by the engine is being decelerated; and means (MG) for imposing a load on an exhaust turbine (9) of the supercharger coupled to an exhaust manifold (21) of the engine to increase the force of the exhaust braking when the ascertaining means determines that exhaust braking is to be exerted on the engine.
Claim 2
Dependent Claim
98 words
A control system for controlling an internal combustion engine (20) fitted with a supercharger (1), characterised by a rotary electric machine (MG) coupled to the supercharger; means (30) for ascertaining whether exhaust braking is to be imposed on the engine when a motor vehicle driven by the engine is being decelerated; and means (MG) for imposing a load on an exhaust turbine (9) of the supercharger coupled to an exhaust manifold (21) of the engine to increase the force of the exhaust braking when the ascertaining means determines that exhaust braking is to be exerted on the engine.
Claim 3
Dependent Claim
24 words
A system according to claim 1, characterised in that the load-imposing means comprises the rotary electric machine (MG) operating as a loaded electrical generator.
Claim 4
Dependent Claim
26 words
A system according to claim 1, characterised in that the load-imposing means comprises means (MG) for reversing the direction of rotation of the exhaust turbine (9).
Claim 5
Dependent Claim
22 words
A system according to claim 3, characterised in that the reversing means comprises the rotary electric machine operating as an electric motor.
Claim 6
Independent Claim
115 words
A system for controlling an internal combustion engine (20), the control system being characterised by an exhaust turbine (9) coupled to an exhaust manifold (21) of the engine; a compressor (8); a rotatable shaft (7) on which the exhaust turbine and the compressor are coaxially mounted; a rotary electric machine (MG) mounted on the shaft and operable selectively as an electric generator or as an electric motor; means (30) for detecting an exhaust brake mode of the engine; means for operating the rotary electric machine as an electric generator when the engine is in the exhaust brake mode; and means (38) for consuming electric power generated by the generator as a load on the generator.
Claim 7
Independent Claim
115 words
A system for controlling an internal combustion engine (20), the control system being characterised by an exhaust turbine (9) coupled to an exhaust manifold (21) of the engine; a compressor (8); a rotatable shaft (7) on which the exhaust turbine and the compressor are coaxially mounted; a rotary electric machine (MG) mounted on the shaft and operable selectively as an electric generator or as an electric motor; means (30) for detecting an exhaust brake mode of the engine; means for operating the rotary electric machine as an electric generator when the engine is in the exhaust brake mode; and means (38) for consuming electric power generated by the generator as a load on the generator.
Claim 8
Dependent Claim
19 words
A system according to claim 5, characterised by means (32) for storing electrical energy generated by the electric generator.
Claim 9
Independent Claim
183 words
A system for controlling an internal combustion engine, the control system being characterised by an exhaust turbine (9) coupled to an exhaust manifold (21) of the engine; a compressor (8); a rotatable shaft (7) on which the exhaust turbine and the compressor are coaxially mounted; a rotary electric machine (MG) mounted on the rotatable shaft and operable selectively as an electric generator or as an electric motor; an inverter (34) for driving the rotary electric machine as an electric motor; means (30) for detecting an exhaust braking mode of the internal combustion engine; means for determining the magnitude of the force of the exhaust brake; means for driving the inverter to operate the rotary electric machine as an electric motor when the force of the exhaust braking is larger than a prescribed value, for reversing rotation of the exhaust turbine; means for operating the rotary electric machine as an electric generator when the force of the exhaust braking is smaller than the prescribed value; and means (38) for consuming electric power generated by the electric generator as a load on the electric generator.
Claim 10
Independent Claim
183 words
A system for controlling an internal combustion engine, the control system being characterised by an exhaust turbine (9) coupled to an exhaust manifold (21) of the engine; a compressor (8); a rotatable shaft (7) on which the exhaust turbine and the compressor are coaxially mounted; a rotary electric machine (MG) mounted on the rotatable shaft and operable selectively as an electric generator or as an electric motor; an inverter (34) for driving the rotary electric machine as an electric motor; means (30) for detecting an exhaust braking mode of the internal combustion engine; means for determining the magnitude of the force of the exhaust brake; means for driving the inverter to operate the rotary electric machine as an electric motor when the force of the exhaust braking is larger than a prescribed value, for reversing rotation of the exhaust turbine; means for operating the rotary electric machine as an electric generator when the force of the exhaust braking is smaller than the prescribed value; and means (38) for consuming electric power generated by the electric generator as a load on the electric generator.
Claim 11
Dependent Claim
27 words
A system according to claim 7, characterised in that the means for consuming electric power comprises means (32) for storing electric power generated by the electric generator.
Claim 12
Dependent Claim
42 words
A system according to claim 7, characterised by means for driving the inverter to operate the rotary electric machine (MG) as a motor to boost the speed of rotation of the compressor (8) when the engine speed is below a predetermined value.
References Cited (Backward Citations)
No citation records indexed.
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