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Browsing by Author "Peng, Z.J."
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Analysis of environmental and economic benefits of integrated Exhaust Energy Recovery (EER) for vehicles
Peng, Z.J.; Wang, T.; He, Y.; Yang, X.; Lu, L. (2013-05-01)Differing from those traditional vehicle exhaust heat recovery systems which just provided thermal energy directly for cabin warming, integrated Exhaust Energy Recovery (EER) which is researched and developed mainly in ... -
Analysis of recoverable exhaust energy from a light-duty gasoline engine
Wang, T.; Zhang, Y.; Zhang, J.; Shu, G.; Peng, Z.J. (2013-05-02)While EER (Exhaust Energy Recovery) has been widely pursued for improving the total efficiency and reducing CO emissions of internal combustion engines, the improvement on engine efficiency has been investigated with ... -
Analysis the effect of advanced injection strategies on engine performance and pollutant emissions in a heavy duty DI-diesel engine by CFD modeling
Mobasheri, R.; Peng, Z.J.; Mirsalim, S.M. (2012-02)An Advanced CFD simulation has been carried out in order to explore the combined effects of pilot-, post- and multiple-fuel injection strategies and EGR on engine performance and emission formation in a heavy duty DI-diesel ... -
Applying the multi-zone model in predicting the operating range of HCCI engines
Jia, M.; Xie, M.; Peng, Z.J. (2010-09)In this paper, a multi-zone model is developed to predict the operating range of homogeneous charge compression ignition (HCCI) engines. The boundaries of the operating range were determined by knock (presented by ringing ... -
CFD analysis of VVT/VVA on the gas exchange and fuel-air mixing in a diesel engine
Peng, Z.J.; Jia, M.; Lu, L. (2009-04-01)A three-dimensional simulation was carried out for investigating effects of negative valve overlap (NVO) on gas exchange and fuel-air mixing processes in a diesel homogeneous charge compression ignition (HCCI) engine with ... -
CFD investigation into diesel fuel injection schemes with aid of Homogeneity Factor
Mobasheri, R.; Peng, Z.J. (2013-04-01)A modified parameter named " Homogeneity Factor (HF) of in-cylinder charge" has been introduced as a new measure for supporting the understanding of the air-fuel mixing and combustion process in diesel engines. The effects ... -
CFD investigation into diesel PCCI combustion with optimized fuel injection
Peng, Z.J.; Liu, Bin; Wang, Weiji; Lu, Lipeng (2011-03)A multi-pulse injection strategy for premixed charge compression ignition (PCCI) combustion was investigated in a four-valve, direct-injection diesel engine by a computational fluid dynamics (CFD) simulation using KIVA-3V ... -
The effect of injection timing and intake valve close timing on performance and emissions of diesel PCCI engine with a full engine cycle CFD simulation
Jia, M.; Xie, M.; Wang, T.; Peng, Z.J. (2011-09-01)A full-cycle computational fluid dynamics (CFD) simulation coupled with detailed chemical kinetics mechanism has been used to investigate the effect of start of injection (SOI) timing and intake valve close (IVC) timing ... -
Effects of bearing outer clearance on the dynamic behaviours of the full floating ring bearing supported turbocharger rotor
Tian, L.; Wang, W.J.; Peng, Z.J. (2012-08-01)As a high speed rotating device, the modern turbocharger rotor is commonly supported by floating ring bearings (FRBs). The high nonlinearity there can always lead to quite complex and interesting phenomena rarely observed ... -
Full engine cycle CFD investigation of effects of variable intake valve closing on diesel PCCI combustion and emissions
Peng, Z.J.; Jia, M. (2009)A full-cycle three-dimensional computational fluid dynamics (CFD) model coupled with detailed chemical kinetics has been developed to investigate the effect of late intake valve closing (IVC) on combustion and emission ... -
In-cylinder air motion characteristics with variable valve lift in a spark ignition engine. Part 1 : Swirl flow
Wang, T.-Y.; Peng, Z.J.; Wang, G.-D. (2011-04)While variable valve actuation or variable valve lift (WL) is used increasingly in spark ignition (SI) engines to improve the volumetric efficiency or to reduce the pumping losses, it is necessary to understand the impact ... -
An investigation and evaluation of variable-valve-timing and variable-valve-actuation strategies in a diesel homogeneous charge compression ignition engine using three-dimensional computational fluid dynamics
Peng, Z.J.; Jia, M. (2008-06-01)A three-dimensional computational fluid dynamics modelling was carried out to investigate effects of variable valve timing (VVT) and variable valve actuation (WA) on gas exchange and fuel-air mixing processes in a diesel ... -
Nonlinear effects of unbalance in the rotor-floating ring bearing system of turbochargers
Tian, L.; Wang, W.J.; Peng, Z.J. (2013-01-01)Turbocharger (TC) rotor-floating ring bearing (FRB) system is characterised by high speed as well as high non-linearity. Using the run-up and run-down simulation method, this paper systematically investigates the influence ... -
Numerical investigation of soot reduction potentials with diesel homogeneous charge compression ignition combustion by an improved phenomenological soot model
Jia, M.; Peng, Z.J.; Xie, M.-Z. (2009-03-01)An improved phenomenological soot model coupled with a reduced n-heptane chemical mechanism was implemented into KIVA-3V code to describe soot formation and oxidation processes in diesel homogeneous charge compression ... -
Numerical Simulation of charge stratifications to improve combustion and NO formation of lean-burn SI engines
Peng, Z.J. (2009-08-01)The influences of charge stratification on spark ignition (SI) engine combustion and NO emission were analyzed using a phenomenological model. The mixture in the cylinder was divided spherically into three parts: a central ... -
Particle image velocimetry measurement of in-cylinder flow in internal combustion engines : Experiment and flow structure analysis
Li, Y.; Zhao, H.; Peng, Z.J.; Ladommatos, N. (2002)A cross-correlation digital particle image velocimetry (PIV) system has been developed and applied to study the in-cylinder flow in a single-cylinder engine with a production-type cylinder head. The PIV system set-up and ... -
A review of researches on thermal exhaust heat recovery with Rankine cycle
Wang, T.; Zhang, Y.; Peng, Z.J.; Shu, G. (2011-08)Internal combustion (IC) engines are the major source of motive power in the world, a fact that is expected to continue well into this century. To increase the total efficiency and reduce CO emissions, recently exhaust ...