Describes improvements in supplying liquid fuel and attaining an intimate mixture of the fuel with the compressed air in engines of the Diesel or slow-combustion type
The invention provides for forming the combustible mixture by causing the fuel, after previous atomisation with compressed air, to penetrate the mantle of an unbroken cone-shaped sheet of compressed air at a point above the apex of the air sheet. The conical air sheet is produced by means of a conical groove having its terminal substantially flush with the terminal of the fuel-inlet passage, but having its apex located in the interior of the cylinder at such a distance from the fuel inlet that the intersection between air and fuel commences at a considerable above the apex within the cylinder.
A valve is provided for controlling the admission of compressed air to the conical air passage co-axially with the fuel-inlet valve, and a collar is provided on the stem of the fuel-inlet valve adapted to engage with a socket or member on the air-inlet valve and to thereby operate the latter, the two engaging parts being arranged to form a cushioning device.