| 摘要 |
According to the present invention, combustion properties of a gaseous fuel such as natural gas, utilized to fuel an internal combustion engine, are determined by measuring the velocity of sound in the gaseous fuel. This sound velocity measurement is utilized to control and adjust engine performance factors such as ignition timing, fuel flow rate, air/fuel ratio, fuel injection timing, and pilot fuel oil quantity and timing in dual fuel systems. The speed of sound in the gaseous fuel is used to define the hydrogen-to-carbon ratio in the fuel, which is employed in the invention to control and adjust various engine performance factors, and a number of display readouts.
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