An engine according to claim 8, wherein the surge take acting as the valve spring is provided with holes in a pipe wall permitting formation inside the tank of pressure existing downstream of the valve.ġ0. An engine according to claim 1, wherein at least one valve spring is of a pressurized surge tank-type.ĩ. An engine according to claim 1, comprising a multiple of five cylinders.Ĩ. An engine according to claim 1, comprising a multiple of four cylinders.ħ. An engine according to claim 1, wherein the communication passageway means between the working chambers of the admission cylinders and the combustion cylinders comprise means for admitting the fuel into the precompressed air flowing therethrough.Ħ. An engine according to claim 1, wherein said communication passageway means comprise a heat exchanger whose inlets are adapted to communicate with the working chambers of the admission cylinders through the discharge valves and whose outlets are adapted to communicate with the working chambers of the combustion cylinders through the admission valves.ĥ. An engine according to claim 2, wherein the five cylinders are disposed along a line, the two admission cylinders being located at the ends of the crankshaft to which they are connected, the third low pressure cylinder being located in the middle.Ĥ. An engine according to claim 1, comprising a third low pressure cylinder whose working chamber is adapted to communicate respectively with the working chambers of both combustion cylinders through at least one transfer valve associated with each combustion cylinder and working in a synchronous manner with said transfer valve between said combustion cylinder and its associated admission cylinder in order to contribute to said second expansion of the combustion gases, and with the discharge manifold through said at least one discharge valve.ģ. Said valves being controlled such that the engine operates as a six-stroke internal combustion engine.Ģ. (d) with a discharge manifold for the combustion gases which have undergone said second expansion, through at least one discharge valve, (c) with the working chamber of the associated combustion cylinder through at least one transfer valve for transferring the high pressure combustion gases produced in said associated combustion cylinder into the admission cylinder, to produce a second expansion and
(b) with the working chamber of the combustion cylinder of the other pair via communication passageway means for discharging into this combustion cylinder the precompressed air, through at least one discharge valve associated with the admission cylinder and through at least one admission valve associated with the combustion cylinder for producing a compression and combustion at a high pressure of the air to which fuel has been added and a first expansion of combustion gases in said combustion cylinder (a) with an air intake manifold through at least one admission valve, for producing a precompression of admitted air Wherein the engine comprises at least four cylinders disposed to form two pairs, one cylinder of each pair being a high pressure combustion cylinder and the other cylinder being adapted to work as a low pressure admission cylinder, the working chamber of each low pressure admission cylinder being adapted to communicate:
Valve means for admission and discharge of a gaseous fluid associated with said at least one cylinder, the piston and cylinder being connected to a crankshaft of the engine
An internal combustion engine comprisingĪt least one cylinder which includes one working chamber having a volume which is rendered variable by displacement inside the cylinder of a piston between a high dead point position and a low dead point position, under effect of pressure forces periodically produced inside said chamber and
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