Minimising Friction in Combustion Engines

Schommers, Joachim; Scheib, Harald; Hartweg, M.; Bosler, Arndt

doi:10.1007/s38313-013-0072-x

Cited by 27 publications

(23 citation statements)

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“…The friction losses in the piston assembly can be up to 50% of the total friction in an engine [1,2]. Approximately half of these losses occur on the ring-pack [3].…”

Section: Introductionmentioning

confidence: 99%

2D CFD-model of the piston assembly in a diesel engine for the analysis of piston ring dynamics, mass transport and friction

Lyubarskyy

Bartel

2016

Tribology International

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“…The friction losses in the piston assembly can be up to 50% of the total friction in an engine [1,2]. Approximately half of these losses occur on the ring-pack [3].…”

Section: Introductionmentioning

confidence: 99%

2D CFD-model of the piston assembly in a diesel engine for the analysis of piston ring dynamics, mass transport and friction

Lyubarskyy

Bartel

2016

Tribology International

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“…This requires application of new materials and variable mechanisms on (IC) engines, such are variable compression ratio (VCR), variable valve train (VVT), fuel injection systems with variable injection timing that have the capability of split multi-injections, homogeneous compression ignition combustion (HCCI), controlled autoignition (CAI), etc. [2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Determination of Combustion Process Model Parameters in Diesel Engine with Variable Compression Ratio

Milojević

Pešić

2018

Journal of Combustion

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Compression ratio has very important influence on fuel economy, emission, and other performances of internal combustion engines. Application of variable compression ratio in diesel engines has a number of benefits, such as limiting maximal in cylinder pressure and extended field of the optimal operating regime to the prime requirements: consumption, power, emission, noise, and multifuel capability. The manuscript presents also the patented mechanism for automatic change engine compression ratio with twopiece connecting rod. Beside experimental research, modeling of combustion process of diesel engine with direct injection has been performed. The basic problem, selection of the parameters in double Vibe function used for modeling the diesel engine combustion process, also performed for different compression ratio values. The optimal compression ratio value was defined regarding minimal fuel consumption and exhaust emission. For this purpose the test bench in the Laboratory for Engines of the Faculty of Engineering, University of Kragujevac, is brought into operation.

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“…The engine friction losses represent 1/3 of the passenger car fuel consumption, hence of the CO2 emissions [1,2]. It is estimated that such losses can be reduced in 20% on the next 5 to 10 years and up to 60% on long term [2].…”

Section: Introductionmentioning

confidence: 99%

“…The piston rings and the piston represent around 50% of the engine friction losses [1] and for that reason, a lot of research and development work has been dedicated worldwide to reduce their friction losses. See figure 1 Figure 1-Engine energy flow in the NEDC cycle and the components friction share of internal friction.…”

Section: Introductionmentioning

confidence: 99%

“…See figure 1 Figure 1-Engine energy flow in the NEDC cycle and the components friction share of internal friction. [1] In Brazil, the use of flex-fuel engines allied with market cost sensitiveness, bring specific challenges on R&D efforts to bring solutions to the market. As example, the higher tribological severity when using ethanol on the piston rings [4] brings some unique demands to flex-fuel engines.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Powercell Solutions for Engine Fuel Consumption Reduction

Neto¹,

Silva²,

Tomanik³

et al. 2014

Anais Do XXII Simpósio Internacional De Engenharia Automotiva

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The Brazilian "Inovar-auto" tax program brings the need to improve engine fuel efficiency. In this paper, the impact on fuel savings by using low friction components was evaluated on representative Brazilian ethanol fueled engines. The vehicle certification cycles, and the typical urban drive, focus on low engine speed-loads where the mechanical losses are around 10% of the fuel energy. To define design changes on the engine components with more fuel saving potential, a proprietary simulation tool was used. After the selection of the design changes with greater potential, the engine was tested in a dedicated dynamometer cell with engine control, accuracy on fuel consumption measurement and fast acceleration transients needed to reproduce the fuel consumption cycles. The comparison between the baseline and the proposed lower friction components was done by 3 methods: a) motoring torque b) fuel consumption mapping, with average weights representative of the homologation cycles c) engine transient cycles, where the vehicle FTP75 and highway cycles were reproduced in the engine dynometer. The proposed lower friction components showed 2 to 6% fuel saving on the tested engines.

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Minimising Friction in Combustion Engines

Cited by 27 publications

References 0 publications

2D CFD-model of the piston assembly in a diesel engine for the analysis of piston ring dynamics, mass transport and friction

2D CFD-model of the piston assembly in a diesel engine for the analysis of piston ring dynamics, mass transport and friction

Determination of Combustion Process Model Parameters in Diesel Engine with Variable Compression Ratio

Powercell Solutions for Engine Fuel Consumption Reduction

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