US20100083919A1 - Internal Combustion Engine With Integrated Waste Heat Recovery System - Google Patents
Internal Combustion Engine With Integrated Waste Heat Recovery System Download PDFInfo
- Publication number
- US20100083919A1 US20100083919A1 US12/245,227 US24522708A US2010083919A1 US 20100083919 A1 US20100083919 A1 US 20100083919A1 US 24522708 A US24522708 A US 24522708A US 2010083919 A1 US2010083919 A1 US 2010083919A1
- Authority
- US
- United States
- Prior art keywords
- heat exchanger
- cylinder bore
- fluid flow
- engine
- fluid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G5/00—Profiting from waste heat of combustion engines, not otherwise provided for
- F02G5/02—Profiting from waste heat of exhaust gases
- F02G5/04—Profiting from waste heat of exhaust gases in combination with other waste heat from combustion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G2260/00—Recuperating heat from exhaust gases of combustion engines and heat from cooling circuits
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Definitions
- the present disclosure relates to engine assemblies including waste heat recovery systems.
- Engine assemblies may include waste heat recovery systems to utilize heat produced by an engine. These systems may typically include an auxiliary expander device in fluid communication with a fluid heated by the engine. In order to couple the power generated by the expander to the engine, complicated coupling devices may be required. Additionally, the use of an auxiliary expander may generate excessive cost and packaging demands, as well as additional complexity for assembly.
- An engine assembly may include a first heat exchanger, a fluid supply system providing a fluid flow to the first heat exchanger, a fuel system, an engine block defining first and second cylinder bores, a first piston disposed within the first cylinder bore, and a second piston disposed within the second cylinder bore.
- the first cylinder bore may receive fuel from the fuel system for combustion therein to drive the first piston.
- the fluid flow may be pressurized within the first heat exchanger and the pressurized fluid may be provided to the second cylinder bore to drive the second piston.
- a method may include providing a fuel supply to a first cylinder bore of an engine block and igniting the fuel supply to power displacement of a first piston located in the first cylinder bore.
- the method may further include providing a fluid flow to a first heat exchanger to pressurize the fluid flow therein and providing the pressurized fluid flow to a second cylinder bore of the engine block to power displacement of a second piston locating in the second cylinder bore.
- FIG. 1 is a schematic illustration of an engine assembly according to the present disclosure.
- FIG. 2 is a schematic illustration of an alternate engine assembly according to the present disclosure.
- an engine assembly 10 may include an engine block 12 , an air intake system 14 , an exhaust system 16 , an engine cooling system 18 , a fuel system 20 and a waste heat recovery system 22 .
- the engine block 12 may define cylinder bores 24 having pistons 26 disposed therein and coupled to a crankshaft 28 .
- the engine block 12 may be formed as a unitary casting.
- the present non-limiting example illustrates an inline four cylinder engine configuration where first and second cylinder bores 24 a , 24 b are combustion cylinders and third and fourth cylinder bores 24 c , 24 d are pressure operated cylinders.
- the air intake system 14 may include an intake manifold 30 in fluid communication with an air source 32 and the first and second cylinder bores 24 a , 24 b .
- the air intake system 14 may be isolated from the third and fourth cylinder bores 24 c , 24 d .
- the fuel system 20 may provide a fuel flow to the first and second cylinder bores 24 a , 24 b .
- the exhaust system 16 may include an exhaust manifold 34 in fluid communication with the first and second cylinder bores 24 a , 24 b and may be isolated from the third and fourth cylinder bores 24 c , 24 d .
- the exhaust manifold 34 may be in fluid communication with and provide an exhaust gas flow 36 from the first and second cylinders 24 a , 24 b to the waste heat recovery system 22 , as discussed below.
- the engine cooling system 18 may include a coolant reservoir 38 , a coolant pump 40 , a thermostat valve 42 , a heat exchanger 44 and a cabin heater 46 .
- the coolant pump 40 may pump engine coolant from the coolant reservoir 38 through coolant passages (not shown) in the engine block 12 and then back to the coolant reservoir 38 . As the engine coolant passes through the engine block 12 , the coolant absorbs heat. The heated engine coolant is returned to the coolant reservoir 38 , as discussed above.
- the engine coolant flows through the cabin heater 46 and/or the heat exchanger 44 .
- the cabin heater 46 and heat exchanger 44 may reduce a temperature of the coolant. More specifically, the cabin heater 46 may transfer the heat from the coolant to a vehicle interior.
- the heat exchanger 44 may additionally form part of the waste heat recovery system 22 , as discussed below.
- the amount of coolant flow passing through the heat exchanger 44 may be controlled by the thermostat valve 42 .
- the waste heat recovery system 22 may include a fluid supply system 48 in fluid communication with a heat exchanger 50 .
- the fluid supply system 48 may include a pump 52 , a reservoir 54 , and first and second control valves 56 , 58 .
- the reservoir 54 may contain a fluid used the waste heat recovery system 22 .
- the fluid may include water.
- the reservoir 54 may additionally include a condenser to convert the fluid from a vapor form to a liquid.
- the heat exchanger 50 may include a first flow path 60 in fluid communication with the exhaust gas flow 36 exiting the first and second cylinders 24 a , 24 b and a second flow path 62 in fluid communication with the fluid from the fluid supply system 48 .
- the second flow path 62 may additionally be in fluid communication with the third cylinder 24 c.
- the fluid supply system 48 may force the fluid through the second flow path 62 in the heat exchanger 50 , where the exhaust gas 36 heats the fluid.
- the fluid may change from a liquid to a vapor based on the heating in the heat exchanger 50 .
- the fluid may expand, increasing in pressure.
- the vapor is supplied to the third cylinder 24 c where the increased pressure is applied to the piston 26 to assist in driving rotation of the crankshaft 28 .
- the amount of vapor supplied to the third cylinder 24 c may be controlled by the first control valve 56 . Excess vapor may return to the reservoir 54 through the second control valve 58 .
- the fluid may remain in the vapor state, and may therefore be used to power displacement of another piston 26 .
- the third and fourth cylinders 24 c , 24 d may be in fluid communication with one another. Flow from the third cylinder 24 c to the fourth cylinder 24 d may be controlled by a third control valve 64 .
- the exhaust stroke of the piston 26 within the third cylinder 24 c may provide the exhaust flow from the third cylinder 24 c to the fourth cylinder 24 d , where the piston 26 in the fourth cylinder 24 d is displaced based on a pressure provided by the exhaust vapor from the third cylinder 24 c .
- the remaining vapor and/or liquid may be returned to the reservoir 54 .
- the fluid flow may be provided to the heat exchanger 50 by the pump 52 .
- the fluid may first pass through the heat exchanger 44 of the cooling system 18 to provide an additional heat source for the fluid before passing through the heat exchanger 50 .
- the first and second cylinders 24 a , 24 b (combustion cylinders) may be directly adjacent one another.
- the first and second cylinders 24 a , 24 b are generally located between the third and fourth cylinders 24 c , 24 d.
- first and third control valves 56 , 64 are schematically illustrated, each may be similar to an intake valve of an engine. Specifically, each of the first and third control valves 56 , 64 may be engaged with an engine camshaft (not shown) and may therefore be mechanically controlled. Further, while the engine assembly 10 is illustrated as an inline four-cylinder configuration, it is understood that the present teachings apply to a variety of other engine configurations including V-engines and horizontally opposed engines, as well as engines having more or less cylinders. For example, FIG. 2 illustrates the present teachings employed in an inline six cylinder arrangement.
- an alternate engine assembly 100 is schematically illustrated. As indicated above, the engine assembly 100 generally depicts an inline six cylinder engine employing a waste heat recovery system 122 generally similar to the waste heat recover system 22 of FIG. 1 .
- the engine assembly 100 may be generally similar to the engine assembly 10 shown in FIG. 1 . Therefore, it is understood that the description above generally applies with the exceptions noted below.
- the engine assembly 100 may include an engine block defining first, second, and third cylinders 124 a , 124 b , 124 c (combustion cylinders) in fluid communication with the fuel system 120 and fourth, fifth, and sixth cylinders 124 d , 124 e , 124 f in fluid communication with the waste heat recovery system 122 .
- the fourth cylinder 124 d may first receive the vapor from the waste heat recovery system 122 and the fifth and sixth cylinders 124 e , 124 f may receive exhaust vapor from the fourth cylinder 124 d .
- Control valves 166 , 168 may control fluid communication between the fourth cylinder 124 d and the fifth and sixth cylinders 124 e , 124 f.
- first, second, and third cylinders 124 a , 124 b , 124 c may be directly adjacent one another.
- the fourth, fifth, and sixth cylinders 124 d , 124 e , 124 f may each be directly adjacent to one another as well.
Abstract
Description
- The present disclosure relates to engine assemblies including waste heat recovery systems.
- This section provides background information related to the present disclosure which is not necessarily prior art.
- Engine assemblies may include waste heat recovery systems to utilize heat produced by an engine. These systems may typically include an auxiliary expander device in fluid communication with a fluid heated by the engine. In order to couple the power generated by the expander to the engine, complicated coupling devices may be required. Additionally, the use of an auxiliary expander may generate excessive cost and packaging demands, as well as additional complexity for assembly.
- This section provides a general summary of the disclosure, and is not a comprehensive disclosure of its full scope or all of its features.
- An engine assembly may include a first heat exchanger, a fluid supply system providing a fluid flow to the first heat exchanger, a fuel system, an engine block defining first and second cylinder bores, a first piston disposed within the first cylinder bore, and a second piston disposed within the second cylinder bore. The first cylinder bore may receive fuel from the fuel system for combustion therein to drive the first piston. The fluid flow may be pressurized within the first heat exchanger and the pressurized fluid may be provided to the second cylinder bore to drive the second piston.
- A method may include providing a fuel supply to a first cylinder bore of an engine block and igniting the fuel supply to power displacement of a first piston located in the first cylinder bore. The method may further include providing a fluid flow to a first heat exchanger to pressurize the fluid flow therein and providing the pressurized fluid flow to a second cylinder bore of the engine block to power displacement of a second piston locating in the second cylinder bore.
- Further areas of applicability will become apparent from the description provided herein. The description and specific examples in this summary are intended for purposes of illustration only and are not intended to limit the scope of the present disclosure.
- The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present disclosure.
-
FIG. 1 is a schematic illustration of an engine assembly according to the present disclosure; and -
FIG. 2 is a schematic illustration of an alternate engine assembly according to the present disclosure. - Corresponding reference numerals indicate corresponding parts throughout the several views of the drawings.
- Example embodiments will now be described more fully with reference to the accompanying drawings.
- With reference to
FIG. 1 , anengine assembly 10 may include anengine block 12, anair intake system 14, anexhaust system 16, anengine cooling system 18, afuel system 20 and a wasteheat recovery system 22. Theengine block 12 may define cylinder bores 24 havingpistons 26 disposed therein and coupled to acrankshaft 28. Theengine block 12 may be formed as a unitary casting. The present non-limiting example illustrates an inline four cylinder engine configuration where first and second cylinder bores 24 a, 24 b are combustion cylinders and third andfourth cylinder bores - The
air intake system 14 may include anintake manifold 30 in fluid communication with anair source 32 and the first and second cylinder bores 24 a, 24 b. Theair intake system 14 may be isolated from the third and fourth cylinder bores 24 c, 24 d. Thefuel system 20 may provide a fuel flow to the first and second cylinder bores 24 a, 24 b. Theexhaust system 16 may include anexhaust manifold 34 in fluid communication with the first and second cylinder bores 24 a, 24 b and may be isolated from the third andfourth cylinder bores exhaust manifold 34 may be in fluid communication with and provide anexhaust gas flow 36 from the first andsecond cylinders heat recovery system 22, as discussed below. - The
engine cooling system 18 may include acoolant reservoir 38, acoolant pump 40, athermostat valve 42, aheat exchanger 44 and acabin heater 46. Thecoolant pump 40 may pump engine coolant from thecoolant reservoir 38 through coolant passages (not shown) in theengine block 12 and then back to thecoolant reservoir 38. As the engine coolant passes through theengine block 12, the coolant absorbs heat. The heated engine coolant is returned to thecoolant reservoir 38, as discussed above. - Before being returned to the
engine block 12, the engine coolant flows through thecabin heater 46 and/or theheat exchanger 44. Thecabin heater 46 andheat exchanger 44 may reduce a temperature of the coolant. More specifically, thecabin heater 46 may transfer the heat from the coolant to a vehicle interior. Theheat exchanger 44 may additionally form part of the wasteheat recovery system 22, as discussed below. The amount of coolant flow passing through theheat exchanger 44 may be controlled by thethermostat valve 42. - The waste
heat recovery system 22 may include afluid supply system 48 in fluid communication with aheat exchanger 50. Thefluid supply system 48 may include apump 52, areservoir 54, and first andsecond control valves reservoir 54 may contain a fluid used the wasteheat recovery system 22. By way of non-limiting example, the fluid may include water. Thereservoir 54 may additionally include a condenser to convert the fluid from a vapor form to a liquid. Theheat exchanger 50 may include afirst flow path 60 in fluid communication with theexhaust gas flow 36 exiting the first andsecond cylinders second flow path 62 in fluid communication with the fluid from thefluid supply system 48. Thesecond flow path 62 may additionally be in fluid communication with thethird cylinder 24 c. - During operation, the
fluid supply system 48 may force the fluid through thesecond flow path 62 in theheat exchanger 50, where theexhaust gas 36 heats the fluid. The fluid may change from a liquid to a vapor based on the heating in theheat exchanger 50. When the fluid transitions from liquid to the vapor, it may expand, increasing in pressure. The vapor is supplied to thethird cylinder 24 c where the increased pressure is applied to thepiston 26 to assist in driving rotation of thecrankshaft 28. The amount of vapor supplied to thethird cylinder 24 c may be controlled by thefirst control valve 56. Excess vapor may return to thereservoir 54 through thesecond control valve 58. - After the power stroke of the
third cylinder 24 c is completed, the fluid may remain in the vapor state, and may therefore be used to power displacement of anotherpiston 26. More specifically, the third andfourth cylinders third cylinder 24 c to thefourth cylinder 24 d may be controlled by athird control valve 64. The exhaust stroke of thepiston 26 within thethird cylinder 24 c may provide the exhaust flow from thethird cylinder 24 c to thefourth cylinder 24 d, where thepiston 26 in thefourth cylinder 24 d is displaced based on a pressure provided by the exhaust vapor from thethird cylinder 24 c. During the exhaust stroke of thepiston 26 within thefourth cylinder 24 d, the remaining vapor and/or liquid may be returned to thereservoir 54. - In the present non-limiting example, the fluid flow may be provided to the
heat exchanger 50 by thepump 52. The fluid may first pass through theheat exchanger 44 of thecooling system 18 to provide an additional heat source for the fluid before passing through theheat exchanger 50. Additionally, in the present non-limiting example, the first andsecond cylinders second cylinders fourth cylinders - It is understood that while the first and
third control valves third control valves engine assembly 10 is illustrated as an inline four-cylinder configuration, it is understood that the present teachings apply to a variety of other engine configurations including V-engines and horizontally opposed engines, as well as engines having more or less cylinders. For example,FIG. 2 illustrates the present teachings employed in an inline six cylinder arrangement. - Referring now to
FIG. 2 , analternate engine assembly 100 is schematically illustrated. As indicated above, theengine assembly 100 generally depicts an inline six cylinder engine employing a wasteheat recovery system 122 generally similar to the waste heat recoversystem 22 ofFIG. 1 . Theengine assembly 100 may be generally similar to theengine assembly 10 shown inFIG. 1 . Therefore, it is understood that the description above generally applies with the exceptions noted below. - The
engine assembly 100 may include an engine block defining first, second, andthird cylinders fuel system 120 and fourth, fifth, andsixth cylinders heat recovery system 122. Thefourth cylinder 124 d may first receive the vapor from the wasteheat recovery system 122 and the fifth andsixth cylinders fourth cylinder 124 d.Control valves fourth cylinder 124 d and the fifth andsixth cylinders - In the inline six cylinder example shown in
FIG. 2 , the first, second, andthird cylinders sixth cylinders
Claims (20)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/245,227 US20100083919A1 (en) | 2008-10-03 | 2008-10-03 | Internal Combustion Engine With Integrated Waste Heat Recovery System |
DE102009043387A DE102009043387A1 (en) | 2008-10-03 | 2009-09-29 | Internal combustion engine with integrated waste heat recovery system |
CN200910178086A CN101713318A (en) | 2008-10-03 | 2009-09-30 | Internal combustion engine with integrated waste heat recovery system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/245,227 US20100083919A1 (en) | 2008-10-03 | 2008-10-03 | Internal Combustion Engine With Integrated Waste Heat Recovery System |
Publications (1)
Publication Number | Publication Date |
---|---|
US20100083919A1 true US20100083919A1 (en) | 2010-04-08 |
Family
ID=42035198
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/245,227 Abandoned US20100083919A1 (en) | 2008-10-03 | 2008-10-03 | Internal Combustion Engine With Integrated Waste Heat Recovery System |
Country Status (3)
Country | Link |
---|---|
US (1) | US20100083919A1 (en) |
CN (1) | CN101713318A (en) |
DE (1) | DE102009043387A1 (en) |
Cited By (23)
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US20110016863A1 (en) * | 2009-07-23 | 2011-01-27 | Cummins Intellectual Properties, Inc. | Energy recovery system using an organic rankine cycle |
US20110048012A1 (en) * | 2009-09-02 | 2011-03-03 | Cummins Intellectual Properties, Inc. | Energy recovery system and method using an organic rankine cycle with condenser pressure regulation |
US20110072816A1 (en) * | 2008-05-12 | 2011-03-31 | Cummins Intellectual Properties, Inc. | Waste heat recovery system with constant power output |
US20110220729A1 (en) * | 2010-03-09 | 2011-09-15 | Gm Global Technology Operations, Inc. | Vehicle waste heat recovery system and method of operation |
US20130186090A1 (en) * | 2009-12-28 | 2013-07-25 | Frédéric Oliver Thevenod | Heat engine with external heat source and associated power generation unit and vehicle |
US20130277968A1 (en) * | 2011-02-10 | 2013-10-24 | Jens Grieser | Stationary Power Plant, in Particular a Gas Power Plant, for Generating Electricity |
US8683801B2 (en) | 2010-08-13 | 2014-04-01 | Cummins Intellectual Properties, Inc. | Rankine cycle condenser pressure control using an energy conversion device bypass valve |
US8707914B2 (en) | 2011-02-28 | 2014-04-29 | Cummins Intellectual Property, Inc. | Engine having integrated waste heat recovery |
US8752378B2 (en) | 2010-08-09 | 2014-06-17 | Cummins Intellectual Properties, Inc. | Waste heat recovery system for recapturing energy after engine aftertreatment systems |
US8776517B2 (en) | 2008-03-31 | 2014-07-15 | Cummins Intellectual Properties, Inc. | Emissions-critical charge cooling using an organic rankine cycle |
US8800285B2 (en) | 2011-01-06 | 2014-08-12 | Cummins Intellectual Property, Inc. | Rankine cycle waste heat recovery system |
US8826662B2 (en) | 2010-12-23 | 2014-09-09 | Cummins Intellectual Property, Inc. | Rankine cycle system and method |
US8893495B2 (en) | 2012-07-16 | 2014-11-25 | Cummins Intellectual Property, Inc. | Reversible waste heat recovery system and method |
US8919328B2 (en) | 2011-01-20 | 2014-12-30 | Cummins Intellectual Property, Inc. | Rankine cycle waste heat recovery system and method with improved EGR temperature control |
DE202015100451U1 (en) | 2015-01-19 | 2015-02-10 | Ford Global Technologies, Llc | Motor arrangement for a motor vehicle |
US9021808B2 (en) | 2011-01-10 | 2015-05-05 | Cummins Intellectual Property, Inc. | Rankine cycle waste heat recovery system |
US9140209B2 (en) | 2012-11-16 | 2015-09-22 | Cummins Inc. | Rankine cycle waste heat recovery system |
US9217338B2 (en) | 2010-12-23 | 2015-12-22 | Cummins Intellectual Property, Inc. | System and method for regulating EGR cooling using a rankine cycle |
DE102015200688A1 (en) | 2015-01-19 | 2016-07-21 | Ford Global Technologies, Llc | Motor arrangement for a motor vehicle |
DE102015200689A1 (en) | 2015-01-19 | 2016-07-21 | Ford Global Technologies, Llc | Motor arrangement for a motor vehicle |
US9470115B2 (en) | 2010-08-11 | 2016-10-18 | Cummins Intellectual Property, Inc. | Split radiator design for heat rejection optimization for a waste heat recovery system |
US9845711B2 (en) | 2013-05-24 | 2017-12-19 | Cummins Inc. | Waste heat recovery system |
US20230250751A1 (en) * | 2020-08-28 | 2023-08-10 | Cae (Ip) Llp | A Mono-Block Reciprocating Piston Composite ICE/ORC Power Plant |
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BR112015023299A2 (en) * | 2013-03-15 | 2017-07-18 | Gen Electric | Cryogenic fuel usage method and fuel vaporization system |
CN106877744B (en) * | 2017-04-25 | 2018-10-19 | 吉林大学 | A kind of piston temperature difference electricity generation device based on temperature feedback control |
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- 2009-09-30 CN CN200910178086A patent/CN101713318A/en active Pending
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US8776517B2 (en) | 2008-03-31 | 2014-07-15 | Cummins Intellectual Properties, Inc. | Emissions-critical charge cooling using an organic rankine cycle |
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DE102009043387A1 (en) | 2010-04-22 |
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