New diesel engines for Volkswagen commercial vehicle applications

Hahne, Bernd; Neuendorf, Stephan; Paehr, Georg; Vollmers, Edgar

doi:10.1007/bf03226997

Cited by 5 publications

(1 citation statement)

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“…The research were studied on a single cylinder machine with common rail injection pressure of 200 and 250 MPa, the results show that increasing the injection pressure is more conducive to the rapid mixing and efficient combustion of fuel and gas than reducing the nozzle diameter, and higher power density can be obtained. Volkswagen 16 has been carrying out research on working fluid flow in cylinder, fuel spray characteristics, and rapid mixing of fuel and gas for many years, and its research results are applied to product development. In 2015, a Passat 2.0 LTDI diesel engine was developed for Euro VI emission.…”

Section: Introductionmentioning

confidence: 99%

Influence of Miller cycle on thermal load of high-boosted diesel engine

Wen

et al. 2022

Advances in Mechanical Engineering

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With the increase of the engine intensified degree, mechanical load and thermal load become to the two main factors limiting the engine to intensify. Application of Miller cycle, which can be realized by late intake valve closing (LIVC) and deeper late intake valve closing (DLIVC), has the potential to reduce the effective CR, mechanical load, and thermal load. In this paper, the effects of LIVC and DLIVC on the mechanical load and thermal load of a boosted DI diesel are experimentally compared. Compared to the original base case, the average cylinder temperature of LIVC and DLIVC is reduced by 90 and 52 K. The exhaust temperature of LIVC and DLIVC decreased by 26 and 14 K, and the maximum combustion pressure of LIVC and DLIVC decreased by 1.6 and 9.7 bar. The pumping losses of LIVC and DLIVC are reduced by more than 25%, while the actual cycle power does not decrease due to the late closing of the inlet valve. The fuel consumption rate decreased from 250.1 g/kWh of base case to 240 g/kWh of LIVC, reduced by 4.0%. The indicated thermal efficiency increased from 41.9% of base case to 43.7% and 42.5% of LIVC and DLIVC. Miller loss is only 2.55% with Miller inlet phase.

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Section: Introductionmentioning

confidence: 99%

Influence of Miller cycle on thermal load of high-boosted diesel engine

Wen

et al. 2022

Advances in Mechanical Engineering

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The critical role of swirl in high-specific-output diesel engines

Feng

Sun

et al. 2023

Fuel

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Experimental Study on Effects of RCSL and RCTL Combustion Chamber for Combustion Process of Highly Intensified Diesel Engine

Wen

Zhu

et al. 2022

Energies

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In order to optimize the combustion chamber of a highly intensified single-cylinder diesel engine, including improvement of the air utilization rate in the combustion chamber, optimization of the fuel/air mixture process, reduction of the soot emission in the cylinder, and obtainment of the optimal combustion performance parameters, a re-entrant combustion chamber with step-typed lip (RCSL) and a re-entrant combustion chamber with tilted lip (RCTL) were innovatively designed and the effects of the throat diameter on the combustion process was obtained through experiments. When the RCSL with a diameter of 72 mm worked, target for the Brake Mean Effective Pressure (BMEP) of 2.6 MPa could be achieved under the condition of excess air coefficient of 1.5~1.7. At the same time, this had the advantages of lower fuel consumption, lower exhaust temperature, lower smoke level, and shorter combustion duration. Under the same BMEP, the RCTL had lower fuel consumption, exhaust gas temperature and maximum combustion pressure, as well as faster heat release rate (HRR) and shorter combustion duration than the RCSL.

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New diesel engines for Volkswagen commercial vehicle applications

Cited by 5 publications

References 0 publications

Influence of Miller cycle on thermal load of high-boosted diesel engine

Influence of Miller cycle on thermal load of high-boosted diesel engine

The critical role of swirl in high-specific-output diesel engines

Experimental Study on Effects of RCSL and RCTL Combustion Chamber for Combustion Process of Highly Intensified Diesel Engine

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