• Lubrication analysis for electric drive unit, including churning loss and oil flow simulation, and vent expulsion analysis.• 1D/3D thermal analysis for electric drive unit.• Major software packages: Star CCM+, Simerics, Amesim, SpaceClaim

• Cooling system optimization for battery pack and fuel cell applications. Key components (pump, radiator/cold plate) design to meet the cooling system requirements (pressure drop and heat rejection) based on 1D/3D CFD analysis.• Battery thermal analysis, including CHT analysis, thermal propagation and flow venting.• Particle based simulation for vehicle wading, gearbox thermal and lubrication analysis.• Project management, including budget planning, project coordination, internal and external communication.

Support engine production development based on 3D CFD analysis, including engine components optimization, components selection and root cause analysis.Improve the current procedures and methodologies with more robust solutions. Collaborate with other teams and focusing on engine system level solutions, such as Conjugate heat transfer and Turbulent jet ignition.

System optimization methodology development during the whole engine production phase, including single part, coupled parts and a whole combustion system.Knocking prediction methodology development.3D CFD combustion simulation standard procedures establishment.

Ph.D. Spray combustion under different ambient conditions • Characterize the spray combustion flame under varied ambient oxygen concentrations and temperatures based on multi-band flame emissions, propose conceptual flame models for low temperature combustion and conventional combustion, enhance the understanding of spray combustion process, and offer a comprehensive database for the validation of combustion simulation. • Complete the two-color pyrometry measurement for the spray combustion of diesel, jet-A, and biomass-based fuel in order to determine the soot temperature and soot concentration (KL factor), and identify the optimized ambient condition to reduce soot and NOx simultaneously.• Study the effects of different loads and pilot injection on spray combustion for diesel, jet-A, and biomass-based fuel based on the multi-band flame emissions and the two-color pyrometry, fundamentally illuminate the mechanism of reducing soot and NOx as multiple injection and pilot injection are applied in an engine combustion system. • Evaluate the effect of fuel blends (dieseline) on the soot formation of the spray combustion process under different ambient conditions based on the two-color pyrometry.

M.S. Characterization of gas exchange process of the Hydrogen Internal Combustion Engine (HICE) • Accomplished the data acquisition of engine test within a wide working range in order to confirm the parameters in HICE control strategy for a higher power density and lower emission, such as air flow rate, combustion pressure trace, and power.• Implemented one-dimension simulation for HICE using GT-power and identified the pressure boundaries for the gas flow system. • Created the moving mesh for one complete cycle by using Pro/E and ICEM-CFD and calculated the gas exchange process of HICE using Fire software. • Analyzed the distributions of velocity and mixture concentration at different time sequences of the exchange process and delivered feasible solutions for increasing power density and avoiding the backfire.• Investigated the whole complete engine cycle in terms of combustion pressure, temperature distribution and NOx emission and presented the possible maximum fuel injection width for increasing power density of HICE.

Research on the development of high power density of HICE using turbocharger • Built one-dimension model for HICE using GT-power, and completed the model validation based on the experimental data related to combustion and gas flow performance.• Identified the requirements of intake pressure, compression ratio and valve timing to meet the need of increase of power density. • Delivered the feasible boundaries for the matching between engine and turbocharger based on the optimization of combustion and gas flow performance.

Research on the development of HICE with a higher efficiency and lower emission • Performed the data acquisition of engine test under a wide range of engine speed, spanning 1000 r/min to 5500 r/min; established the comprehensive dataset, including air flow rate, combustion pressure trace, NOx emission, optimized ignition advance timing. • Employed the control strategy to decrease NOx, featuring three steps under different loads; integrated the EGR components into engine system in order to further decrease NOx emission under high loads.• Successfully acquired the ECU map and achieved the power of 60kw for the normally aspirated PFI hydrogen internal combustion engine.

Research on the engine used for hybrid power at Chongqing Chang’an Automobile Co., Ltd.• Executed one-dimension simulation on the aim engine with Atkinson thermodynamic cycle by using the GT-power software; provided a set of initial parameters, such as compression ratio, the length of intake manifold, valve timing, and ignition advance timing. • Utilized the varied valve timing (VVT) control component to optimize the compression ratio in order to make full use of advantage of Atkinson thermodynamic cycle.• Summarized optimal strategies for reconstructing special hybrid engines in cooperation with the technicians.