Development and validation of a thermodynamic model for an SI single-cylinder engine

Journal Article · Thu Jan 01 04:00:00 EST 1998 · Journal of Engineering for Gas Turbines and Power

DOI:https://doi.org/10.1115/1.2818078· OSTI ID:289981

Yacoub, Y M; Bata, R M ^[1]

---

1. West Virginia Univ., Morgantown, WV (United States). Dept. of Mechanical and Aerospace Engineering

A multizone quasi-dimensional model that illustrates the intake, compression, combustion, expansion, and exhaust processes has been developed for a single-cylinder four-stroke spark-ignition engine. The model takes into consideration mass and energy conservation in the engine cylinder, intake and exhaust plenums, and crankcase plenum. The model calculates instantaneous variations in gas thermodynamic states, gas properties, heat release rates, in-cylinder turbulence, piston ring motion, blowby, nitric oxide, and carbon monoxide formation. The cycle simulation accounts for the induced gas velocities due to flame propagation in the turbulence model ({kappa}-{epsilon} type), which is applied separately to each gas zone. This allows for the natural evolution of the averaged mean and turbulent velocities in burned and unburned gas regions. The present model predictions of thermal efficiency, indicated mean effective pressure, peak values of gas pressure, ignition delay, concentrations of nitric oxide, carbon monoxide, and carbon dioxide are proven to be in agreement with experimental data.

• Sponsoring Organization: USDOE
• OSTI ID: 289981
• Journal Information: Journal of Engineering for Gas Turbines and Power, Journal Name: Journal of Engineering for Gas Turbines and Power Journal Issue: 1 Vol. 120; ISSN JETPEZ; ISSN 0742-4795
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
MATHEMATICAL MODELS
SPARK IGNITION ENGINES
THERMAL EFFICIENCY
THERMODYNAMICS