US6604360B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust driven engine cooling system
Assignee: Deere and Co
•
Filing: 2002-04-18
•
Granted: 2003-08-12
•
Expires: 2022-04-18
Abstract
Abstract An energy recovery system for an internal combustion engine includes a turbocharger unit having a turbocharger turbine receiving exhaust from the engine and a second turbine driven by the exhaust gasses. The second turbine drives an electrical generator. The generator supplies electrical power to an electrical control unit, which supplies power to an electric fan motor which drives an engine cooling fan driven by. The control unit also supplies electrical power to an electric coolant pump motor which drives an engine coolant pump. The second turbine is preferably a variable geometry turbine whose geometry is controlled so that its power absorption matches the electrical load of the generator.
Inventors
- 👤 Carl Thomas Vuk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:16
CPC Classifications
F; F01; F01N; F01N5/00; F01N5/04; F02; F02B; F02B37/00; F02B37/005; F02B63/00; F02B63/04; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
74 words
An energy recovery system for an internal combustion engine, comprising: a first stage turbine driven by exhaust gasses from the engine; a second stage turbine driven by exhaust gasses from the first stage turbine; an electrical generator driven by the second stage turbine; an engine cooling device driven by an electric cooling device motor; and a control unit for receiving electrical power from the generator and supplying electrical power to the cooling device motor.
Claim 2
Dependent Claim
74 words
An energy recovery system for an internal combustion engine, comprising: a first stage turbine driven by exhaust gasses from the engine; a second stage turbine driven by exhaust gasses from the first stage turbine; an electrical generator driven by the second stage turbine; an engine cooling device driven by an electric cooling device motor; and a control unit for receiving electrical power from the generator and supplying electrical power to the cooling device motor.
Claim 3
Dependent Claim
23 words
The energy recovery system of claim 1 , wherein: the cooling device comprises an engine cooling fan for blowing air through a radiator.
Claim 4
Dependent Claim
32 words
The energy recovery system of claim 1 , wherein: the cooling device comprises an engine coolant pump driven by an electrical pump motor for circulating coolant through the engine and a radiator.
Claim 5
Dependent Claim
30 words
The energy recovery system of claim 3 , wherein: the control unit supplies electrical power to the pump motor and controls pump motor speed as a function of engine output.
Claim 6
Dependent Claim
38 words
The energy recovery system of claim 4 , further comprising: a coolant temperature sensor which provides a coolant temperature signal to the control unit, the control unit controlling the pump motor as a function of sensed coolant temperature.
Claim 7
Dependent Claim
18 words
The energy recovery system of claim 1 , wherein: the second stage turbine comprises a variable geometry turbine.
Claim 8
Dependent Claim
20 words
The energy recovery system of claim 1 , wherein: the control unit provides electrical power at high and low voltages.
Claim 9
Dependent Claim
18 words
The energy recovery system of claim 1 , wherein: the first stage turbine drives an intake air compressor.
Claim 10
Dependent Claim
27 words
The energy recovery system of claim 1 , wherein: the second stage turbine includes a wastegate controlled by an actuator which is controlled by the control unit.
Claim 11
Dependent Claim
81 words
An energy recovery system for an internal combustion engine, comprising: a turbocharger unit having an intake air compressor driven by a first stage turbine receiving exhaust from the engine; a second stage turbine driven by the exhaust gasses from the first stage turbine; an electrical generator driven by the second stage turbine; an engine coolant pump driven by an electric pump motor; and a control unit for receiving electrical power from the generator and supplying electrical power to the pump motor.
Claim 12
Dependent Claim
81 words
An energy recovery system for an internal combustion engine, comprising: a turbocharger unit having an intake air compressor driven by a first stage turbine receiving exhaust from the engine; a second stage turbine driven by the exhaust gasses from the first stage turbine; an electrical generator driven by the second stage turbine; an engine coolant pump driven by an electric pump motor; and a control unit for receiving electrical power from the generator and supplying electrical power to the pump motor.
Claim 13
Dependent Claim
26 words
The energy recovery system of claim 10 , further comprising: an engine cooling fan driven by an electrical fan motor for blowing air through a radiator.
Claim 14
Dependent Claim
30 words
The energy recovery system of claim 10 , wherein: the control unit supplies electrical power to the pump motor and controls pump motor speed as a function of engine output.
Claim 15
Dependent Claim
38 words
The energy recovery system of claim 11 , further comprising: a coolant temperature sensor which provides a coolant temperature signal to the control unit, the control unit controlling the fan motor as a function of sensed coolant temperature.
Claim 16
Dependent Claim
18 words
The energy recovery system of claim 10 , wherein: the second stage turbine comprises a variable geometry turbine.
Claim 17
Dependent Claim
20 words
The energy recovery system of claim 10 , wherein: the control unit provides electrical power at high and low voltages.
Claim 18
Dependent Claim
27 words
The energy recovery system of claim 10 , wherein: the second stage turbine includes a wastegate controlled by an actuator which is controlled by the control unit.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-08-11 | 2007-02-10 | 2007-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-08-11 | 2011-02-10 | 2011-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-08-11 | 2015-02-10 | 2015-08-12 | $7700.00 | Window Closed / Lapsed |