Internal combustion engine
AssigneeDIRO Konstruktions GmbH & Co, KG
InventorHubert Tomczyk
Life of this patent
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Abstract
The invention aims at providing higher efficiency and good exhaust gas performance. To this end, a fresh-gas is compressed in a first cylinder chamber having a first piston during successive compression strokes and compressed in one of at least two combustion chambers, in which combustion of a mixture consisting of the compressed fresh gas and an at least partially evaporated fuel is started after the combustion chamber has been closed in relation to the first combustion chamber. Subsequently, the combustion chamber is opened relative to a second cylinder chamber and a second piston in the second cylinder chamber is impinged upon by the combustion gases expanding form the combustion chamber to perform a working cycle. After the working cycle has been completed, the exhaust gases are expelled from the second cylinder chamber.
Claims38
An internal combustion engine which comprises:
- a first cylinder in which a first piston is connected to a crank shaft that is guided, and a first cylinder volume, which is formed between the first piston and the first cylinder and is adapted to be filled with fresh gas during the expansion thereof in a suction stroke, whereby the fresh gas is adapted to be compressed in a subsequent compression stroke during the reduction in size of the first cylinder volume, wherein outside the first cylinder volume there are provided at least two mutually separated combustion chambers, which are arranged in a rotatably mounted combustion rotary valve, the first cylinder is spaced from a second cylinder in the axial direction of the combustion rotary valve and compressed fresh gas is adapted to be transferred from the first cylinder to the second cylinder by the combustion rotary valve, wherein the compressed fresh gas is chargeable with fuel and is ignitable therein is adapted to be successively fed into the combustion chambers from the first cylinder volume during successive compression strokes, and following the ending of a respective compression stroke, each of the combustion chambers is connectible during a working stroke to a second cylinder volume, which is formed between the second cylinder and a second piston that is connected to the crank shaft, whereby the second piston is displaceable by the ignition of the compressed fresh gas that is charged with fuel in such a manner that the second cylinder volume will be expandable and exhaust gas will be expellable by the second piston from the second cylinder volume during an exhaust stroke subsequent to the working stroke.
A process for operating an internal combustion engine comprising:
- compressing fresh gas in a first cylinder volume incorporating a first piston during at least one compression stroke and is forced into one of at least two combustion chambers which are arranged in a rotating combustion rotary valve, wherein combustion of a mixture consisting of the compressed fresh gas and at least partially evaporated fuel is initiated after the combustion chamber has been closed relative to the first cylinder volume;
- opening the combustion chamber relative to a second cylinder volume and the expanding combustion gases from the combustion chamber are applied to a second piston in the second cylinder volume for performing a working stroke;
- expelling exhaust gases from the second cylinder volume, wherein the first cylinder volume is spaced from the second cylinder volume in the axial direction of the combustion rotary valve following the completion of the working stroke;
- and
- transferring compressed fresh gas from the first cylinder volume to the second cylinder volume by the combustion rotary valve.
The process according to claim 35, further includes at least partially transferring residual exhaust gases, which are present in the combustion chamber, from the combustion chamber to an exhaust line following the closure of a combustion chamber relative to the second cylinder volume.
The process according to claim 35, wherein an inlet connector that intermittently connects the first or the second cylinder volume to a suction line and an outlet connector that intermittently connects the first or the second cylinder volume to an exhaust line rotate in synchronism with the two combustion chambers, whereby the two combustion chambers are held closed relative to the cylinder volume during the respective suction and exhaust connecting processes.
Dependencies are inferred from the claim text.