Experimental Investigation of Piston Heat Transfer in a Light Duty Engine Under Conventional Diesel, Homogeneous Charge Compression Ignition, and Reactivity Controlled Compression Ignition Combustion Regimes

Gingrich, Eric; Ghandhi, J. B.; Reitz, Rolf D.

doi:10.4271/2014-01-1182

Cited by 40 publications

(24 citation statements)

References 16 publications

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“…2,28 Since this study primarily focuses on heat transfer in a light-duty engine operated at lightto-medium loads where soot emissions are low and combustion temperature is relatively low, it is expected that ignoring the radiation heat transfer will not significantly affect the final predictions. Furthermore, in the deviation of equation (11), the contributions due to unsteadiness, the rate of pressure rise (dp=dt), and chemical energy release ( _ q c ) in the thermal boundary layer were ignored. The introduction of the quasi-steady assumption is based on the finding of Han and Reitz, 12 who indicated that the effect of unsteadiness on wall heat flux is insignificant.…”

Section: Heat Transfer Modelmentioning

confidence: 99%

“…Based on the measurements of surface temperature, the surface heat flux was calculated by utilizing Fourier analysis. More about the experimental setup can be found in Gingrich et al 11 To save computational time, a 1/7th sector mesh was employed for the simulations, which corresponds to the 7-hole injector used in this study. Figure 1 shows the computational domain and grid.…”

Section: Engine Specificationsmentioning

confidence: 99%

“…For the prediction of wall heat transfer, the temperatures of liner, cylinder head, and piston face are needed as input parameters. Torregrosa et al 34 indicated that the gas temperature rather than the wall temperature more strongly affects the transient heat transfer; thus, the averaged wall temperatures based on the experimental measurements of Gingrich et al 11 were used in this study.…”

Section: Engine Specificationsmentioning

confidence: 99%

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Effect of combustion regime on in-cylinder heat transfer in internal combustion engines

Jia

Gingrich

Wang

et al. 2015

International Journal of Engine Research

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A multi-dimensional model was applied to investigate the influence of combustion regimes on heat transfer losses in internal combustion engines. By utilizing improved turbulence and heat transfer sub-models, the combustion and heat transfer characteristics of the engine were satisfactorily reproduced for operation under conventional diesel combustion, homogeneous charge compression ignition, and reactivity controlled compression ignition regimes. The results indicated that the total heat transfer losses of conventional diesel combustion are the largest among the three combustion regimes due to the direct interaction of the high-temperature flame with the piston wall, while the heat transfer losses of reactivity controlled compression ignition are the lowest and nearly are independent of combustion phasing because of the avoidance of high-temperature regions adjacent to the cylinder walls. Compared to conventional diesel combustion, homogeneous charge compression ignition shows more potential for the reduction of exhaust energy and improvement of fuel efficiency. In reactivity controlled compression ignition combustion, the reduction of heat transfer and exhaust losses outweigh its increase in combustion losses and offer the opportunity for further improvement of fuel efficiency. Furthermore, by evaluating the widely used Woschni and Chang et al.'s empirical heat transfer correlations, it was found that both correlations considerably overestimate the heat transfer rate for the reactivity controlled compression ignition regime. It is necessary to improve empirical heat transfer models to take account of the flow and combustion characteristics under various combustion modes.

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Section: Heat Transfer Modelmentioning

confidence: 99%

Section: Engine Specificationsmentioning

confidence: 99%

Section: Engine Specificationsmentioning

confidence: 99%

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Effect of combustion regime on in-cylinder heat transfer in internal combustion engines

Jia

Gingrich

Wang

et al. 2015

International Journal of Engine Research

Self Cite

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“…Simulation. Temperature field and heat transfer coefficient are important boundary conditions for the piston thermal analysis [19,20]. The third type of boundary condition is usually adopted in the analysis of the piston, which requires the temperature T and heat transfer coefficient α of the peripheral medium to be given.…”

Section: Temperature Field Measurement and Numericalmentioning

confidence: 99%

Failure Analysis of the Pin Bore of the Combined Piston for the Aero Engine

Pan

Guo

2019

International Journal of Aerospace Engineering

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The combined piston can be used in an aero piston heavy fuel engine because of its light weight, so as to reduce the reciprocating inertia force and improve the engine power-weight ratio. However, the pin bore of the combined piston is prone to deform leading to the failure of the piston. Based on the structure of the piston, the stress of the piston under thermomechanical coupling is analyzed, the temperature field of the piston is determined by experiments, and the deformation rule of the piston pin bore under the thermomechanical coupling is summarized. A design scheme is proposed to change the position of the thread connection between the piston crown and the piston head. Under the same conditions, the deformation of the piston pin bore of the original scheme and the new scheme is analyzed. The results show that together with the changing of the connection thread between the piston crown and the piston head, the deformation of the piston pin bore decreases by 60 μm and the deformation of the piston pin bore is controlled. The test results show that the deformation of the pin bore is within the acceptable range, which proves the effectiveness of the improved scheme.

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“…The benefit of reduced heat loss with greater effective expansion ratio has been demonstrated only in low-temperature combustion (LTC) concepts such as Partially Pre-mixed Compression Ignition (PPCI) or Reactivity Controlled Compression Ignition (RCCI). The heat flux to the walls has been shown to decrease with retarded combustion in LTC engines as well [4], and hence a DCEE with LTC would be very beneficial. The low-temperature combustion concepts have been successfully demonstrated in labs and demonstration vehicles but lack the required controls has stopped to their adoption in production vehicles.…”

Section: Double Compression Expansion Enginementioning

confidence: 99%

Double Compression Expansion Engine: A Parametric Study on a High-Efficiency Engine Concept

Shankar

Johansson

Andersson

2018

SAE Technical Paper Series

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The Double compression expansion engine (DCEE) concept has exhibited a potential for achieving high brake thermal efficiencies (BTE). The effect of different engine components on system efficiency was evaluated in this work using GT Power simulations. A parametric study on piston insulation, convection heat transfer multiplier, expander head insulation, insulation of connecting pipes, ports and tanks, and the expander intake valve lift profiles was conducted to understand the critical parameters that affected engine efficiency. The simulations were constrained to a constant peak cylinder pressure of 300 bar, and a fixed combustion phasing. The results from this study would be useful in making technology choices that will help realise the potential of this engine concept.

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Experimental Investigation of Piston Heat Transfer in a Light Duty Engine Under Conventional Diesel, Homogeneous Charge Compression Ignition, and Reactivity Controlled Compression Ignition Combustion Regimes

Cited by 40 publications

References 16 publications

Effect of combustion regime on in-cylinder heat transfer in internal combustion engines

Effect of combustion regime on in-cylinder heat transfer in internal combustion engines

Failure Analysis of the Pin Bore of the Combined Piston for the Aero Engine

Double Compression Expansion Engine: A Parametric Study on a High-Efficiency Engine Concept

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