Internal combustion engine
AssigneesMotoren-Forschungs GmbH KG, Franke Motoren
InventorWalter Franke
Life of this patent
Estimating the term…
Abstract
A cylinder has a head and a bottom. A piston is reciprocable in the cylinder and defines a power chamber with said head and an air compression chamber with said bottom. Controlled intake and exhaust ports are formed in said cylinder and adapted to communicate with said power chamber. Igniting means are operable to initiate a combustion of a fuel-air mixture in the power chamber. An inlet is formed in the cylinder and adapted to communicate with compression chamber. A valve controls said inlet. Said piston is adapted to perform in response to the combustion a power stroke toward a dead center near the bottom, whereby air is compressed in the compression chamber. Transfer means are provided to transfer compressed air from the compression chamber to said exhaust port after said power stroke.
Claims6
An internal combustion engine, which comprises
- at least one pair of cylinders, each of which has a head and a bottom,
- at least one pair of pistons, each of which is reciprocable in one of said cylinders and defines a power chamber with said head of said cylinder and an air compression chamber with said bottom of said cylinder.
- controlled intake and exhaust ports formed in each of said cylinders and adapted to communicate with said power chamber thereof,
- igniting means associated with each of said cylinders and operable to initiate a combustion of a fuel-air mixture in said power chamber of the associated cylinder,
- an inlet formed in each of said cylinders and adapted to communicate with said compression chamber thereof,
- a valve controlling each of said inlets,
- both said pistons of each pair being adapted to perform in unison a forward stroke toward a dead center near side bottom, whereby air is compressed in the compression chamber of the associated cylinder, and a reverse stroke from said dead center near said bottom to a dead center near said head, and
- transfer means for transferring compressed air from said compression chambers to said exhaust port of each of said cylinders after a power stroke of the associated piston,
- said transfer means comprising at least one pair of compression chamber outlets arranged to communicate with said compression chambers of both cylinders of each pair at the beginning of each of said reverse strokes of the associated piston, at least one pair of power chamber inlets arranged to communicate with each of said power chambers of both cylinders of each pair at the beginning of each of said reverse strokes of the associated piston, at least one pair of transfer ducts adapted to connect one pair of said outlets to one pair of said inlets, and a cross-connecting duct connecting said transfer ducts of each pair.
Dependencies are inferred from the claim text.