Funktionale Integration einer Wassereinspritzung in den Ottomotor

Böhm, Martin; Mährle, Werner; Bartelt, Hans-Christian; Rubbert, Stephan

doi:10.1007/s35146-015-0151-4

Cited by 13 publications

(4 citation statements)

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“…Subramanian [16] investigated the effects of water-diesel emulsion and water injection into the intake manifold on the performance, combustion and emission characteristics of a DI diesel engine under similar operating conditions. Hybrid Water Injection Systems BMW [17] has developed a system that combines and uses at the same time water injection into the intake plenum with high-pressure direct injection of a mixture of gasoline and water. As a water source, the released water condensate from the air conditioning system is stored in a tank and used for both water injection systems.…”

Section: Fuel-water Emulsionmentioning

confidence: 99%

Investigating the influence of water injection on the emissions of a diesel engine

Kettner¹,

Dechent²,

Hofmann³

et al. 2016

J. Mech, Eng, Sci.

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There are many methods to decrease the nitrogen oxide emissions of a diesel engine. One promising measure is water injection into the engine's intake manifold. As emission limits become more and more stringent, the diesel engine NOx-particulate trade-off is a challenge for engine developers. To overcome this challenge, a single-point water injection system has been developed to investigate the influence of different amounts of injected water on the behaviour of a 4-cylinder diesel engine. The amount of injected water was varied from 0 to 100% water-to-fuel ratio in part-load operation (BMEP = 2, 3.5 and 5 bar). The influence on the intake air cooling effect, exhaust emissions, combustion and engine parameters was evaluated. The combustion temperature and the NOx emissions decreased drastically (63% NOx decrease for a BMEP of 5 bar and a waterto-fuel ratio of 100%). This benefit had the drawback of an increase of the particle matter emission at high water-to-fuel ratio. The combustion process and performance parameters regarding efficiency, torque and fuel consumption were marginally influenced by the water injection. This work has achieved a major reduction of NOx raw emissions of a diesel engine. Further research lines could include research on water injection at high load operation points in the engine map.

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Section: Fuel-water Emulsionmentioning

confidence: 99%

Investigating the influence of water injection on the emissions of a diesel engine

Kettner¹,

Dechent²,

Hofmann³

et al. 2016

J. Mech, Eng, Sci.

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“…First is a mixture injection, without producing a real emulsion. This could be done by using the high pressure pump (HDP5) [3] [4]. Therefor it is mandatory to bring both fluids together in front of the pump.…”

Section: Mixture and Emulsion Injectionmentioning

confidence: 99%

“…It is not known if a homogenous emulsion is necessary for a good combustion. Experiments by Durst [1] and Böhm [3] show that it is sufficient to mix water and gasoline in front of the high pressure pump [3]. But it is not known what kind of mixture is produced by this system of Durst [1] and Böhm [3].…”

Section: Water-gasoline-emulsion As Passenger Car Fuelmentioning

confidence: 99%

“…Experiments by Durst [1] and Böhm [3] show that it is sufficient to mix water and gasoline in front of the high pressure pump [3]. But it is not known what kind of mixture is produced by this system of Durst [1] and Böhm [3]. Literature research indicates that the use of emulsified fuel with surfactant cause additional emissions after the combustion.…”

Section: Water-gasoline-emulsion As Passenger Car Fuelmentioning

confidence: 99%

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Measurement of a Direct Water-Gasoline-Emulsion-Injection

Wagner

Rottengruber

Beyrau

et al. 2017

Proceedings ILASS–Europe 2017. 28th Conference on Liquid Atomization and Spray Systems

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The investigation focus for combustion engines is on reduction of emissions as well as fuel consumption. By introducing the gasoline direct injection combined with downsizing the efficiency and the fuel consumption of gasoline engines has been optimized. An additional potential to the previous solutions provides the water injection. The article include the results of the fundamental research of water injection for combustion engines, it shows the influence of the amount of water in a water-gasoline-emulsion on the spray in a high pressure injection chamber. Therefor the spray of a gasoline direct injection injector is visualized by a high speed camera using the shadowgraph technique.

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PKW-Ottomotoren

Gottschalk

2018

Grundlagen Verbrennungsmotoren

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Funktionale Integration einer Wassereinspritzung in den Ottomotor

Cited by 13 publications

References 0 publications

Investigating the influence of water injection on the emissions of a diesel engine

Investigating the influence of water injection on the emissions of a diesel engine

Measurement of a Direct Water-Gasoline-Emulsion-Injection

PKW-Ottomotoren

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