Air-compressing reciprocating piston-equipped internal combustio

Internal-combustion engines – Combustion chamber means having fuel injection only – Injected fuel spraying into whirling fluid

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123276, 123279, F02B 3100

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active

046762108

ABSTRACT:
An air-compressing reciprocating piston-equipped internal combustion engine comprises, in the frontal face of a piston head, a rotation-symmetrical cavity as a combustion chamber, a fuel-feeding unit generating a rotary motion of the air charge entering the cavity, and a fuel injection unit. The fuel injection unit is provided with an injection nozzle for injecting fuel directly into the cavity constituting the combustion chamber. In order to achieve a higher degree of efficiency, a decrease of the emission of polluting gases and of noise, as well as a relief of the mechanically highly stressed parts of the engine, the rotary motion of the air charge generated by the fuel-feeding unit is given a swirl number of about 1.5 to 2.5. Furthermore, the diameter (d) of the combustion chamber-constituting cavity is between about 55 to 75% of the diameter (D) of the cylinder, and finally, the fuel injection nozzle has at least four orifices.

REFERENCES:
patent: 2959161 (1960-11-01), Bottger et al.
patent: 3020898 (1962-02-01), Hartmann
patent: 4108116 (1978-08-01), Ohta
patent: 4207843 (1980-06-01), List et al.
patent: 4338898 (1982-07-01), Bauder et al.
patent: 4392465 (1983-07-01), Wolters et al.

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