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Heat
Recovery (EGHR) system to accelerate coolant heat up time. This gives faster heat up of the engine coolant which in turn heats up the engine faster. Less fuel is used giving reduced emissions. This will also quicken cabin heating warm up for passenger comfort and window defrosting. For hybrid
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WildFire Heat
Recovery System (WFHRS) is under development and utilizes wasted heat from both coolant and exhaust. This system mechanically adds power back to the drive-line, utilizing a Rankine engine as the energy conversion method. The WFHRS is designed for a variety of different applications,
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also develops a module based on a
Rankine Cycle to improve overall efficiency of hybrid vehicles, by recovering the heat of the engine and turning it into electricity for the battery pack. In the US highway cycle, the Rankine cycle system regenerated three times as much energy as the vehicle's
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systems vaporize pressurised water using a steam generator located in the exhaust pipe. As a result of the heating by exhaust gases, the fluid is turned into steam. The steam then drives the expander of the
Rankine engine, either a turbine or pistons. This expander can be directly tied to the
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applications, it also can warm the battery pack. The cooling system is connected to a heat exchanger placed in the exhaust gas transferring the thermal energy from the exhaust gas to the cooling system. When the engine is warmed up the exhaust gas is diverted to a by-pass pipe.
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studies a
Rankine system for long distance vehicles that could lead to 10% fuel savings. The goal is to produce enough energy to feed the components and electronic auxiliaries with electricity and reduce the fuel consumption by reducing the load on the alternator.
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both fixed and variable RPM, aftermarket and OEM applications, but generally geared toward larger equipment such as large on-highway trucks, diesel generators, large buses and motor-homes, marine vessels, medium duty trucks, etc.
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emissions, exhaust heat recovery sounds like one of the most efficient ways to recover a free energy, since heat is generated in many ways by the engine. Numerous companies develop systems based upon a
Rankine Cycle:
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from light-duty vehicle engines in a steam power cycle could deliver fuel economy advantages of 6.3% – 31.7%, depending upon drive cycle, and that high efficiencies can be achieved at practical operating pressures.
273:, reliability, and costs are necessary parts of Formula 1 manufacturers’ strategies. Automobile sport is also a good place to trial and assess technologies that, once made reliable, and with costs reduced by
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The German consortium unites the majority of internal combustion engine manufacturers across the world. Two task forces are currently studying exhaust heat recovery systems on passenger cars.
277:, can be adapted to private cars. Formula 1 constructors produced one of the first exhaust heat recovery systems, and nowadays these devices are essential parts of embedded technologies on
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is specialized in designing and manufacturing exhaust heat recovery systems based on
Rankine Cycles. The system EVE, Energy Via Exhaust, leads to fuel savings from 5 up to 15%.
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39:. The technology is of increasing interest as car and heavy-duty vehicle manufacturers continue to increase efficiency, saving fuel and reducing emissions.
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effects) is also an option to recover heat from the exhaust pipe, but has not been put to practical use in modern cars.
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The German company has been one of the first major to study exhaust heat recovery with a
Rankine system called
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engine is around 35%, which means that 65% of the energy released from the fuel is lost as heat. High speed
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Facing the new
American, European, Japanese or Chinese regulation, more and more stringent concerning CO
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533:"Harnessing the Rankine cycle to recover exhaust gas heat and boost train energy efficiency"
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IFPEN, Enogia and Alstom are developing a system called
Trenergy dedicated to improve train
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299:"Study: Steam Hybrids Using Waste Heat Recovery Could Reduce Fuel Consumption Up To 31.7%"
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UK researchers at Loughborough University and the University of Sussex concluded that
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engines fare better with around 45% peak efficiency, but are still far from the
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Exhaust Heat Recovery on internal combustion engines with Rankine Cycle Systems
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While technological improvements have greatly reduced the fuel consumption of
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Hounsham, Sandra; Stobart, Richard; Cooke, Adam; Childs, Peter (2008-04-14).
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into electric energy for batteries or mechanical energy reintroduced on the
403:"2016 Chevrolet Malibu Hybrid Exhaust Gas Heat Recovery: Feature Spotlight"
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Barber-Nichols Inc. develops Rankine technologies for vehicles.
357:"Temperatures rise in BMW's work to recover engine waste heat"
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Renault Trucks: As a part of the All For Fuel Eco Initiative,
485:. Michelinchallengebibendum.com. 2012-12-06. Archived from
67:, with 55% of the fuel energy content rejected as heat.
535:. Ifpenergiesnouvelles.com. 2013-03-19. Archived from
483:"Welcome on the Michelin Challenge Bibendum website"
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94:crankshaft of the thermal engine or linked to an
462:"Renault Trucks Corporate : Press releases"
405:By Aaron Brzozowski, GM Authority, April 2, 2015
43:Thermal losses of an internal combustion engine
23:Exhaust Heat Recovery Unit in Toyota Prius PHV
8:
464:. Corporate.renault-trucks.com. 2011-02-09
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234:WildFire Heat Recovery System (WFHRS)
7:
510:. doublearroweng.com. Archived from
316:Energy Recovery Systems for Engines
416:"EVE - Energy Via Exhaust - Exoès"
71:Exhaust heat recovery technologies
14:
301:. Green Car Congress. 2008-04-28
110:Thermoelectric generators (TEG)
265:Fuel efficiency, reduction of
261:Exhaust heat recovery in sport
65:maximum theoretical efficiency
1:
189:regenerative braking system.
29:exhaust heat recovery system
418:. Exoes.com. Archived from
355:Stuart Birch (2012-02-03).
49:internal combustion engines
31:turns waste heat energy in
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359:. Sae.org. Archived from
320:(Technical report). SAE.
240:Double Arrow Engineerings
116:thermoelectric generators
98:to generate electricity.
441:"Organic Rankine Cycles"
275:experience in production
574:Automotive technologies
170:Chevrolet Malibu Hybrid
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114:A second technology,
86:organic Rankine cycle
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16:Automotive technology
326:10.4271/2008-01-0309
569:Vehicle technology
383:"BMW TurboSteamer"
197:A French company,
53:thermal efficiency
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55:of a 4-stroke
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541:. Retrieved
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381:Tan, Paul.
174:Exhaust gas
51:, the peak
558:Categories
543:2013-10-12
518:2016-06-04
493:2013-10-12
468:2013-10-12
447:2013-10-12
426:2013-10-12
389:2013-10-12
367:2013-10-12
305:2023-12-31
285:References
103:waste heat
96:alternator
57:Otto cycle
37:crankshaft
342:0148-7191
334:2688-3627
310:, citing
271:emissions
168:The 2016
508:"WFHRS"
128:Thomson
124:Peltier
120:Seebeck
76:Rankine
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249:Trains
221:Trucks
330:eISSN
199:Exoès
193:Exoès
186:Honda
181:Honda
338:ISSN
84:and
322:doi
213:FVV
152:BMW
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