The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 30, 1987
Filed:
May. 02, 1986
Steyr-Daimler-Puch AG, Vienna, AT;
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.