As I recall, the large I-R gas engines were burning raw natural gas coming
out of the well head. Occasionally there would be a slug of liquid. The
liquid could obviously cause problems.

Jon

Ah so. Seems like a problem that can be solved.
In the process of searching the old files for messages on this
subject I came up with a couple of tech papers.

850034 
    R. Sierens and W. Verdonck, "Development of a Natural Gas Stratified Charge
Rotary Engine", SAE Int. Cong. and
    Expo, Detroit, Feb. 25 - Mar. 1, 1985, 13 pp. Audi NSU engine tested by Univ. of
Gent (Ghent?). 

860563 
    T.N. Chen, R.N. Alford, and S.S. Kim, "Detonation Characteristics of Industrial
Natural Gas Rotary Engines", SAE Int.
    Congr. and Expo., Detroit MI, Feb. 24, 1986. Describes Ingersoll-Rand IR-2500
engine. 

870448 
    Steven R. King, "Durability of Natural Gas Fueled Rotary Engines", SAE Int. Cong.
and Expo. Detroit, Feb. 23, 1987. 
 
Paul Lamar
 
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