Development of the in-line versions of the 2400G Series of spark ignited, gas-fueled engines has been in process for the last six years. The main objective of this program is to produce a new series of 1200 rpm gas engines having a continuous duty rating of 200 bhp per cylinder. This paper deals with the highlights of the engine development program from the initial concept stage through the operation of prototype engines at customer sites. Development procedures are described that led to substantial advances in performance improvement and exhaust emissions control. A focal point of this work is the combustion analysis, which was conducted through computer simulation and through the operation of a gas-fueled, single-cylinder test facility. This preliminary analysis resulted in the definition of the basic configurations for the prechamber and the main combustion chamber. The applicability of the modeling and the single cylinder test work to the six and eight cylinder engines is evaluated in this paper. Development of appropriate manifolding, turbocharging, and cylinder balance was a critical part of the multicylinder phase of this program. Another key issue was the design and testing of the electronic feedback control system that assures continuous operation at conditions that produce optimized fuel economy and exhaust emissions. The satisfactory operation of the six and eight cylinder 2400G prototype engines in the field is based on the foundation of the developmental work described in this paper.

Adams, T. G., 1978, “Theory and Evaluation of Auxiliary Combustion (Torch) Chambers,” SAE Paper No. 780631.
W. J. D.
, “
Heat Transfer in the Cylinders of Reciprocating Internal Combustion Engines
Proceedings of the Institution of Mechanical Engineers
, Vol.
, No.
, pp.
Ballard, H. N, Hay, S. C., and Shade, W. N., 1992, “An Overview of Exhaust Emissions Regulatory Requirements and Control Technology for Stationary Natural Gas Engines,” Society of Petroleum Engineers Paper No. 24306.
Caton, J. A., and Heywood, J. B., 1980, “Models for Heat Transfer, Mixing and Hydrocarbon Oxidation in an Exhaust Port of a Spark-Ignited Engine,” SAE Paper No. 800290.
Chrisman, B. M., 1983, “Regulations and Control Technology for Stationary Engine Exhaust Emissions,” presented at the Casper Oil Show and Conference.
Eckard, D. W., and Serve´, J. V., 1987, “Maintaining Low Emissions With Turbocharged Gas Engines Using a Feedback Air-Fuel Ration Control System,” ASME Paper No. 87-ICE-2.
Heywood, J. B., 1988, Internal Combustion Engine Fundamentals, McGraw-Hill, New York.
Hires, S. D., et al., 1976, “Performance and NOx Emissions Modeling of a Jet Ignition Prechamber Stratified Charge Engine,” SAE Paper No. 760161.
Karlekar, B. V., and Desmond, R. M., 1977, Engineering Heat Transfer, West Publishing Company.
Komizama, K., and Heywood, I. B., 1973, “Predicting NOx Emissions and Effects of Exhaust Gas Recirculation in Spark Ignition Engines,” SAE Paper No. 730475.
Olikara, C., and Borman, G. L., 1975, “A Computer Program for Calculating Properties of Equilibrium Combustion Products With Some Applications to I. C. Engines,” SAE Paper No. 750468.
Schaub, F. S., and Hubbard, R. L, 1985, “A Procedure for Calculating Fuel Gas Blend Knock Rating for Large Bore Gas Engines and Predicting Engine Operation,” ASME Paper No. 85-DGP-5.
Serve´, J. V., 1982, “NOx Reduction on Large Bore Turbocharged SI Engines,” ASME Paper No. 82-DGP-16.
Wall, J. C., and Heywood, J. B., 1978, “The Influence of Operating Variables and Prechamber Size on Combustion in a Prechamber Stratified-Charge Engine,” SAE Paper No. 780966.
Watson, N., and Janota, M. S., 1982, Turbocharging the Internal Combustion Engine, Wiley, New York, p. 532.
Zeleznik, F. J., and McBride, B. J., 1977, “Modeling the Complete Otto Cycle—Preliminary Version,” SAE Paper No. 770223.
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