The second configuration is based on coupling an electrical generator to the tc shaft for extracting excess power produced by the turbine electric turbo compound. Future turbo tech electric turbo compounding aet turbos. In this case, the turbine produces more power than the one necessary to drive the compressor and the excess power is converted into electric power using a high speed. System a has an electricassisted turbocharger, system b has a turbogenerator that is in series with the turbocharger, and system c has a turbogenerator that. Electric turbo compounding etc is a promising technology for gasoline engine exhaust energy recovery. Turbocompounding is the use of a power turbine to extract additional energy from the exhaust. Compounding is the use of two or more sources to produce a single output. Compounding of steam turbines is the strategy in which energy from the steam is extracted in a number of stages rather than a single stage in a turbine. Comparative study on electric turbocompounding systems for gasoline engine exhaust energy recovery. Cybersecurity solutions help safeguard connected vehicles. Electric turbocompounding application to gas engines for. Open genset solutions electric turbo compounding etc.
Therefore, this system is effective for engine systems with purposes such as downsizing and increasing efficiency of the system. The etc installation is designed to prevent the produce of a back pressure effect which disturbs the engine performance. Both radial and axial power turbines are available for a variety of heavyduty applications. In heavyduty engines, series turbocompoundingwhere a power turbine is connected in series with turbocharger turbineis the most important configuration. In a twin turbo system, the two turbochargers that compress the air are the same size, and they are set up to split the job of feeding air into the intake between them. An electric turbocompound system with a lowpressureratio turbine is. Our etc products make gas and dieselpowered gensets work more cleanly and effectively, by recovering waste energy from the genset exhaust to improve power density and fuel efficiency. In this paper, a new electric turbocompounding layout called electricbooster and turbogenerator system ebtg was established and studied in a 1. Pdf a large proportion about 33% of the fuel energy is lost through exhaust gas in a gasoline engine. John deere 60 figure 46 fuel consumption based on combined engine shaft and electrical power. Electric turbo compounding etc simulation using ford ecoboost base line engine with modification using hyboost modelled with avl boost software was carried out for the analysis. Africas intermittent power supply has been identified as a key limiting factor to its economic growth. Turbocompounding systems with calnetix magnaforce motor generators enable 7 to 8 percent more power to be produced from existing gensets or the same power to be produced from smaller gensets.
Comparative study on electric turbocompounding systems for gasoline engine exhaust energy recovery conference paper pdf available october. Comparative study on electric turbo compounding systems for gasoline engine exhaust energy recovery conference paper pdf available october 2010 with 1,162 reads how we measure reads. In mechanical turbo compounding, waste energy from the exhaust is recovered and converted into kinetic energy via the addition of a second turbine. There are mainly three kinds of electric turbocompounding systems for internal combustion engines. To effectively recovery the energy in exhausts and improve the transient performance of internal combustion engine. Electric turbocompounding the mechanical turbocompounding technology has been utilized in diesel engines, but the system hardware is rather complex. A turbocharger has a first turbine driven by exhaust gasses from the engine and a compressor driven by the first turbine and provides inlet air to the engine. Home etc for open genset open genset efficiency improvement.
Us7047743b1 electric turbo compound configuration for an. Pasini, gianluca, frigo, stefano, and antonelli, marco. This paper examines different simulation and engine test resu10 mwerange with differing lts in the 1 performance objectives. Exhaust energy recovery with turbo compounding in a. On this mechanism, the exhaust gas flow is used to rotate the alternator. System a has an electricassisted turbocharger, system b has a turbogenerator. Pdf optimization of an electric turbo compounding system for. Comparative study on electric turbocompounding systems for. Turbo compounding is used currently in truck engines by detroit diesel and volvo, but they are suited to long haul applications where the engine is at a constant revsload, the power turbine it is said extracts up to 50 horsepower to put back into the crankshaft but the trade off as explained earlier is increased exhaust backpressure meaning the pistons have to push harder to get the. Volvo trucks new turbo compounding, available on our d engines beginning mid2017. Turbo compounding can provide dramatic savings through fuel efficiency improvements of up to 6. Turbocompounding is the use of a turbine as one of the sources and the engine as the other to produce one output. The power that does exist on the continent is further threatened. Electric turbo compounding etc technology is our solution to the challenge of improving energy efficiency for the stationary power generation industry.
A system that converts waste exhaust energy to shaft work, using a turbine, and couples it back to the engine, electrically. The turboelectric turbocompounding system 10 may further incorporate a provision for detecting if the electrical load on the synchronous 56, 56. Turbo compounding is the process of using a turbo run off exhaust gasses to provide additional power to the crankshaft via gearing or a hydrodynamic coupling, or to power a generator that. Turbo compounding is a type of waste heat recovery that uses a turbine run off exhaust gases to provide additional power to the crankshaft via gearing or a hydrodynamic coupling, or to power a n electric generator that distribu tes energy via a power. Turbocompounding, turbochargers tech talk cycle world. Pdf comparative study on electric turbocompounding.
Why turbo compounding may be the next big thing in. A validated 1d engine model was used to investigate the impact on the brake specific fuel consumption bsfc and brake mean effective pressure bmep at full load. The concept behind electric turbo compounding isnt new the aerospace industry began using mechanical turbo compounding in the 1940s in an effort to maximise efficiency. The exhaust gases represented in red are i n 2008, the fia enforced the.
During low engine speed, since the energy from exhaust gas is insufficient. Regional outlook geographically, the global turbo compounding systems market can be divided by major regions which include north america, latin america, western and eastern europe, asia. The improvements in fuel efficiency help keep the engines cleaner, reducing emissions, including black smoke and reducing maintenance costs. This is called turbocompounding, and the tc in tc18 stood for guess what. Todays engines reject 40% of the fuels energy in the exhaust gas stream. Evaluation of electricturbocompounding technology applied to marine dieselengines for waste heat recovery 1. Garrett is pioneering eturbo technology to deliver superior performance, fuel economy and emissions, by integrating stateoftheart, ultra highspeed electric motors and power electronics into its turbocharger product families. Recently, in literature the possibility of having an energy recovery, thanks to the turbo compounding, in the form of electrical energy, has gained interest. Comparative study on electric turbocompounding systems. An electric turbo compound etc system is defined where a turbine coupled to a generator turbogenerator is located in the exhaust gas flow of a reciprocating engine to harvest waste heat energy and convert it into electrical power. Pdf simulation study on electric turbocompound etc for. An electric turbo compound etc system is defined where a turbine coupled to a generator. One of the effective way to reduce the problem, electric turbo compounding system has been researched globally. Most recently, mts has supplied high power density, low weight electric motors for use as permanent drives in allelectric racing cars.
Turbocompound engine wikimili, the free encyclopedia. The fuel consumption reduction in transportation fields is a critical issue in the whole world. Electric turbocompounding system attracts more attention in recent years with the advance of electronic control devices. Turbo compounding, a technology whos time has come pdf. The article was created because there is a great deal of confusion with regards to the terminology and many web resources incorrectly consider it a form of twin turbo system. Pdf electric turbo compounding applied to a ci engine. In compound turbocharged systems, you again have two compressors, but unlike in.
Heavyduty engine electric turbocompounding manuel kant. Not every turbocharger system that utilizes two compressors is a twin turbocharger system. The simulation results show a 3% reduction in brake specific fuel consumption bsfc, 0. Electric superchargers how audi is eliminating turbo lag. Its good for about 435 horsepower and 660 lbft of torque, which is great, but the fun doesnt stop there. Electric turbo compounding technology update author. These generators will also run via turbo compounding. Asme 2016 internal combustion engine division fall technical conference. The electric turbo compounding etc system is an ideal way to improve the efficiency of an open genset, including gas and dieselfuelled engines. One of the effective way to reduce fuel consumption and electric turbo compounding system etcs has been researched globally.
Pdf electric turbocompounding system attracts more attention in recent years with the advance of electronic control devices. Pdf download for heavyduty engine electric turbocompounding. The turbo compounding mechanism will be coupled to the crank shaft of the engine via two different techniques, hydrodynamics coupling or by using the gearing technology. Kers, and electric turbocompounding, which recovers and recycles exhaust gas heat energy from internal combustion piston engines. The utilization of exhaust gas flow with electric turbo compounding etc mechanism is applied on this research.
Proceedings of the asme 2016 internal combustion engine division fall technical conference. Mechanical and electromagnetic analysis of high speed. An engineelectric generator system includes an internal combustion engine, a primary electric generator driven by an output shaft of the engine and providing electrical power. Incremental price for mechanical turbocompounding for class 8 line haul trucks a lower incremental cost for the technology was predicted as part of the 2016 phase 2 ghg emission and fuel efficiency rulemaking for heavyduty vehicles that was jointly promulgated by the epa and nhtsa 3811. The electric turbo compounding systems have inherent technological benefits over mechanical turbo compounding systems. Figure 43 volvo d12d 500hp euro 3 engine turbocompound set up source. Electric turbocharging for energy regeneration and increased. An example of an etc system is where a turbogenerator is located downstream of a turbocharger turbine of an. Pdf comparative study on electric turbocompounding systems. One turbo is a traditional exhaustdriven type, while the other is an electric unit. Currently, mts offers electric motors capable of delivering from 1 to 250 kw. The increasing demands of ancillary electrical equipment and the rise of hybrid powertrain vehicles have led to a growing electrical energy requirement in vehicle. A system that converts waste exhaust energy to shaft work, using a turbine, and couples it.
There is a chance of using power generators to produce electric power. What is electric turbo compounding etc and how can it help. Technology delivery process advanced engineering john. With this system, about 30% exhaust gas can be recycled as a power source. Evaluation of electricturbocompound applied to marine dieselengines for waste heat recovery october 4th, 2018 prof richard bucknall ucl presenter. Study of the electricbooster and turbogenerator system. Ac generator becomes disconnectedfor example, as a result of failure of either the synchronous 56, 56. In this paper, optimization of an etc system for turbocharged gasoline engines is carried out. Finally, the work presents an electric turbo compounding etc simulation using a ford ecoboost as a baseline engine modeled with the 1dimensional avl boost software.
In the absence of sufficiently stringent standards, innovative technologies depend on incentives to accelerate initial market penetration. Simulation study on electric turbocompound etc for thermal energy recovery in turbocharged internal combustion engine alias mohd noor1, 2, a. Simulation study on electric turbocompound etc for. Turbo compounding is the use of a blowdown turbine in the exhaust flow to recover energy which would otherwise be lost to atmosphere. Helping make distributed power systems more efficient. Bowman power group unique electric turbo compounding technology duration. Scania 59 figure 45 electric turbocompounding source. A holset power turbine works handinhand with the holset turbocharger by driving power back through the crankshaft and extracting energy from the exhaust stream. Audi made the concept to show off the potency of electric turbochargers, saying that the technology is close to. Pdf optimization of an electric turbo compounding system. Mechanical turbocompounding has been used commercially in diesel engines for various applications for many decades. Cases that increase electrical output, electrical efficiency and transient response are discussed and evaluated.
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