The new V6 gasoline engine with direct injection by Mercedes-Benz

Lückert, Peter; Waltner, Anton; Rau, Erhard; Vent, Guido; Schaupp, Uwe

doi:10.1007/bf03227881

Cited by 8 publications

(4 citation statements)

References 1 publication

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“…Recently, spray-guided direct injection (SGDI) has enabled stratified combustion systems on both production engines 67,68 and research prototype engines. 69 A minimum brake-specific fuel consumption (BSFC) of 220 g/kW h has been achieved on a SGDI engine thanks to the reduction in cylinder wall heat transfer, lower exhaust gas enthalpy and reduced pumping losses.…”

Section: Downsized Gasoline Enginesmentioning

confidence: 99%

“…69 On these engines, stoichiometric combustion is generally only required at above approximately 7-8 bar BMEP or above 3500 r/min engine speed. 67,70 Compared to diesel engines, SGDI may become a cost-effective solution for some applications due to the lower cylinder pressure and fuel rail pressure. The independent control of injection and spark timing offers flexibility to optimise the thermodynamic processes.…”

Section: Downsized Gasoline Enginesmentioning

confidence: 99%

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A review of the application of variable geometry turbines to the downsized gasoline engine

Tang

Pennycott

Akehurst

et al. 2014

International Journal of Engine Research

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Engine downsizing through turbocharging is a proven method of improving fuel economy by using a smaller engine operating at higher levels of specific engine load and higher efficiency. Turbocharging is more challenging for the gasoline engine than the diesel engine due to the higher variability in the flow rate of air and the higher exhaust gas temperature. Although the variable geometry turbine offers the potential for improving the low-end torque, lowering part-load fuel consumption and delivering a fast transient response on a downsized gasoline engine, the cost, durability and the limited allowable turbine inlet temperature on the currently available devices present challenges to widespread application. This article details the main operating principles and types of the variable geometry turbine, its potential to deliver performance improvements, implementation challenges on the gasoline engine and the measures available to alleviate those challenges. Of the available types of variable geometry turbine, the variable nozzle form has the highest efficiency over a wide flow range while the variable flow and sliding wall types have better reliability and lower cost. Using additional technologies such as the water-cooled exhaust manifold, specialist turbocharger materials, exhaust gas recirculation and novel combustion systems in combination with advanced control strategies will facilitate variable geometry turbine application and hence allow further downsizing of the gasoline engine.

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Section: Downsized Gasoline Enginesmentioning

confidence: 99%

Section: Downsized Gasoline Enginesmentioning

confidence: 99%

A review of the application of variable geometry turbines to the downsized gasoline engine

Tang

Pennycott

Akehurst

et al. 2014

International Journal of Engine Research

View full text Add to dashboard Cite

show abstract

“…11. The Volkswagen Jetta 2.01 turbo-diesel has BSFC of 250 g/kW-h [27]; a homogeneous gasoline direct-injected spark ignited engine [28] has BSFC of about 255; the Daimler 3.5L V6 spray-stratified engine [29] has BSFC of about 247; and a gasoline spark-ignited engine with increased cooled EGR [30] has BSFC of about 245 g/kW-h. The estimated BSFC for a multi-cylinder GDCI engine is about 210 g/kW-h or about 16 percent less than the Jetta diesel.…”

Section: Fig -10: Fuel Consumption and Co2 Emissions Comparison;mentioning

confidence: 99%

History of Gasoline Direct Compression Ignition (Gdci) Engine- A Review

MeisamAhmadiGhadikolaei¹

2014

IJRET

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The first single-cylinder gasoline direct compression ignition (GDCI) engine was designed and built in 2010 by Delphi Companyfor testing performance, emissions and Brake specific fuel consumption (BSFC). Then after achieving the good results in performance, emissions and BSFCfrom single-cylinder engine, multi-cylinder GDCI engine was built in 2013. The compression ignition engine has limitations such as high noise, weight, PM and NO X emissions compared to gasoline engine. But the high efficiency, torque and better fuel economy of compression ignition engine are the reasons of Delphi Company to use compression ignition strategy for building a new combustion system. The objective of the present review study involves the reasons of building of the GDCI engine in detail.

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“…Enleanment can reduce both heat losses and pumping work and increase the ratio of specific heats of the working fluids. The first direct-injection (DI) gasoline engines to enter mass production utilised lean-stratified operation [5][6][7][8], their wall-guided combustion systems were superseded by spray-guided engines with piezo-electric injectors [9][10][11][12]. Boosted lean direct-injection gasoline engines were first demonstrated almost 20 years ago [13,14], they entered series production in 2012 [15].…”

Section: Introductionmentioning

confidence: 99%

A New Generation Lean Gasoline Engine for Premium Vehicle CO₂ Reduction

Osborne¹,

Lane²,

Turner³

et al. 2021

SAE Technical Paper Series

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In an era of rapidly increasing vehicle electrification, the gasoline engine remains a vital part of the passenger car powertrain portfolio. Lean-burn combustion is a formidable means for reducing the CO2 emissions of gasoline engines but demands the use of sophisticated emissions control.A 2.0 litre turbocharged direct-injection gasoline engine has been developed with a lean homogeneous combustion system matched to a robust lean and stoichiometric-capable exhaust aftertreatment. The aftertreatment system includes an SCR system and a GPF with filtration down to 10 nm particle size. The engine is equipped with a continuously variable valve-lift system, high-tumble ports and a highenergy ignition system; the boosting system comprises a variable geometry turbocharger and a 48 V electrical supercharger.The work reported formed part of the PaREGEn (Particle Reduced, Efficient Gasoline Engines) project under the Horizon 2020 framework programme. In this project, further development of gasoline engines as used in mid to premium-sized cars was undertaken, with the objective to reduce CO2 emissions by 15% under Euro 6d RDE (Real Driving Emissions) legislation and with particle number emissions measured down to 10 nm. This paper will give a detailed treatment of the multi-cylinder engine and vehicle development undertaken. The engine delivered BSFC benefits exceeding 10% and a peak brake thermal efficiency of 42%, while the vehicle demonstrated a NOx conformity factor below 1.0 in independent RDE tests.

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The new V6 gasoline engine with direct injection by Mercedes-Benz

Cited by 8 publications

References 1 publication

A review of the application of variable geometry turbines to the downsized gasoline engine

A review of the application of variable geometry turbines to the downsized gasoline engine

History of Gasoline Direct Compression Ignition (Gdci) Engine- A Review

A New Generation Lean Gasoline Engine for Premium Vehicle CO₂ Reduction

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The new V6 gasoline engine with direct injection by Mercedes-Benz

Cited by 8 publications

References 1 publication

A review of the application of variable geometry turbines to the downsized gasoline engine

A review of the application of variable geometry turbines to the downsized gasoline engine

History of Gasoline Direct Compression Ignition (Gdci) Engine- A Review

A New Generation Lean Gasoline Engine for Premium Vehicle CO2 Reduction

Contact Info

Product

Resources

About

A New Generation Lean Gasoline Engine for Premium Vehicle CO₂ Reduction