Numerical Simulation of Warm-Up Characteristics and Thermal Management of a GDI Engine

Lahuerta, Jesús; Samuel, Stephen

doi:10.4271/2013-01-0870

Cited by 11 publications

(4 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Previous studies have shown that the discrepancy between numerical simulation results and those obtained through experimentation in the case of key engine parameters are in the range of approximately 5% (brake‐specific fuel consumption) to 10% (engine torque and brake power). A similar approach to engine modelling to the present work was taken by . The results here are for the most part shown as relative changes to a base case simulation (Table ), rather than absolute values, which helps to remove systematic biases.…”

Section: Methodsmentioning

confidence: 99%

Partitioning of MCHP-TES system run time to incorporate transient system behaviour: a comprehensive exergy-based analysis using simulation

Ummenhofer

Olsen

Roediger

2016

Int. J. Energy Res.

View full text Add to dashboard Cite

SUMMARYBy combining heat and power generation, mini-combined and micro-combined heat and power systems (MCHP) provide an efficient, decentralised means of power generation that can complement the composition of the electricity generation mix. Dynamic tools capable of handling transient system behaviour are required to assess MCHP efficiency beyond a mere static analysis based on steady-state design parameters. Using a simulation of a cogeneration system, we combine exergetic definitions for different operational system states to quantify the overall system efficiency continuously over the whole period of operation. The concept of exergy allows direct comparison of different forms of energy. A sensitivity analysis was performed where we quantified the effect on MCHP overall performance under varying engine rotational speed, thermal energy storage size and fluid storage temperature in a range of MCHP simulations. We found that the exergetic quantity of natural gas used by the MCHP decreased slightly at higher engine speeds (À2% to À4%). While the total amount of electricity generated is almost constant across the range of different engine output, more thermal exergy (up to +21%) can be recovered when the engine is operating at elevated speeds. Furthermore, selection of specific optimal thermal storage fluid temperatures can aid in improving system efficiency.

show abstract

Section: Methodsmentioning

confidence: 99%

Partitioning of MCHP-TES system run time to incorporate transient system behaviour: a comprehensive exergy-based analysis using simulation

Ummenhofer

Olsen

Roediger

2016

Int. J. Energy Res.

View full text Add to dashboard Cite

show abstract

“…J Lahuerta, and S Samuel developed a simulation model to improve thermal efficiency of IC Engine for operating engine in various range such as cold start etc. This was formulated based on the thermal management strategy in an engine can allow the engine to work at different operating temperature in order to reduce heat transfer loss by ensuring optimum volumetric efficiency, efficient combustion and adequate safety margin durability of mechanical components [5]. L Li, Y Luan, Z Wang and J Deng develop a simulation model for free piston engine alternator integrative power system.…”

Section: IImentioning

confidence: 99%

Numerical Simulation of Compression Ignition Diesel Injection (CIDI) to investigate Performance parameters

Lahane¹,

Pandey²

2018

IJAERS

View full text Add to dashboard Cite

This paper describes the requirement of the Numerical simulation of compression ignition diesel injection by the use of computer language and it also compares the performance parameter for the biodiesel such as jatropha and karanja. The Engine test was carried out in 512 Army base workshops for the experimental validations. It was carried out on SAJ dynamometer which was installed in Engine test house for testing of Engines. Performance parameters such as Brake power, Brake Torque, Mechanical efficiency, Thermal Efficiency, Pressure vs Crank angle and Heat release Rate vs Crank Angle was taken from the Engine test house. The Program code for the Performance parameter of Engine was developed in C++ language.Then the simulation was carried out. The simulation results were compared and analyzed with the experimental results. The final results was effective for compression ignition diesel injection. As we know that today's world is approaching towards computer simulated results, so the numerically simulated results will save time and money for engine testing house. Likewise we can approach towards numerical simulation for various types of Engines.

show abstract

“…The most significant operating variable which is directly linked to thermal efficiency which can be controlled is heat loss from the combustion and expansion stroke (Andrews, et al, 1989). GDI engines suffer significantly during cold start because of the poor evaporation of the fuel and the air-fuel ratio fluctuation due to wall wetting (Lahuerta & Samuel, 2013). This work uses Woschni's heat transfer model (Woschni, 1967) for estimating heat transfer rate in the combustion chamber during compression, gas exchange, combustion and expansion process separately.…”

Section: Heat Transfer Modelmentioning

confidence: 99%

Optimization of fuel injection in GDI engine using economic order quantity and Lambert W function

Ventura

Samuel

2016

Applied Thermal Engineering

Self Cite

View full text Add to dashboard Cite

show abstract

Numerical Simulation of Warm-Up Characteristics and Thermal Management of a GDI Engine

Cited by 11 publications

References 18 publications

Partitioning of MCHP-TES system run time to incorporate transient system behaviour: a comprehensive exergy-based analysis using simulation

Partitioning of MCHP-TES system run time to incorporate transient system behaviour: a comprehensive exergy-based analysis using simulation

Numerical Simulation of Compression Ignition Diesel Injection (CIDI) to investigate Performance parameters

Optimization of fuel injection in GDI engine using economic order quantity and Lambert W function

Contact Info

Product

Resources

About