The invention described relates to two-stroke cycle Diesel engines, in which the combustible mixture is compressed in the cylinder on the up-stroke of the piston.
On the down-stroke, air is compressed in the crankcase in the usual manner, and is delivered into a chamber situated in an intermediate position between the crank-case and the inlet ports, the amount of air being regulated by means of a rotary or other valve operated by the governor.
On the water-jacket, in a position adjacent to the inlet ports, a fuel connection, fitted with a needle-valve which can be regulated by hand, is suitably mounted, and likewise a nozzle, which latter is so arranged that the vacuum produced on the up-stroke of the piston causes a flow of fuel into it, a convenient form of guard being provided to prevent the fuel from dropping into the bottom of the air-chamber.
At the termination of the down-stroke at such time as the inlet ports are uncovered, the fuel contained in the above-mentioned nozzle will be blown into the cylinder by the air compressed in the crank-case, the amount of fuel depending on the amount of air, which latter is in turn dependent upon a valve controlled by the governor.
Amongst the advantages of this invention would be cheapness of manufacture owing to the absence of cam-shafts, valves etc,. It would not, however, appear to be likely to prove an economical one so far as consumption of fuel is concerned.