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US 4,090,479 AGranted
I.C. engine having improved air or air-fuel induction system
OwnerFrank Kayeinventor
Life of this patent
Estimating the term…
Abstract
An internal combustion engine having at least one cylinder in which at least one piston is reciprocable; the air, or air and fuel, induction being by means of an inlet port giving rise to helical flow of air, or air and fuel within the cylinder. In one form, the inlet port is substantially tangential to the cylinder. The cylinder may have a pair of pistons therein movable in unison to adjacent top dead center positions wherein they define with the cylinder wall, an annular combustion chamber.
Claims11
An internal combustion engine having:
- at least one cylinder in which an induction piston and an exhaust piston are oppositely reciprocable between their top dead center and bottom dead center positions;
- induction port means for the induction to said cylinder of at least one of air and a mixture of air and fuel in a helical, circular flow in said cylinder, and
- an exhaust port means for exhaustion from said cylinder of combustion gases;
- each of said pistons having a tapered crown defined by a circumferential surface and terminating in an end surface extending transversely of said piston, said tapered crown being such that, when said pistons are adjacent their top dead center positions, said end surfaces are closely juxtaposed and said circumferential surfaces define with an intermediate section of the cylinder an annular combustion zone in which said helical circular flow is constrained;
- said induction port means comprising at least one induction port extending substantially tangentially of said cylinder so as to give rise to said helical, circular flow, and being located along said cylinder such that its extent axially of the cylinder is substantially within the axial extent of the induction piston crown, when the latter is in its bottom dead center position, so that the circumferential surface of that crown guides said helical circular flow;
- and
- said exhaust port means comprising at least one exhaust port extending substantially tangentially of said cylinder, and being located laterally of the crown of said exhaust piston when the latter is in its bottom dead center position so as to receive combustion gases in a continuation of said helical, circular flow;
- there being at least one spark plug for said combustion zone provided in said intermediate cylinder section.
5 more elements
An internal combustion engine having:
- at least one cylinder in which an induction piston and an exhaust piston are oppositely reciprocable between their top dead center and bottom dead center positions, each piston having a respective conrod connected to a crankshaft;
- induction port means for the induction to said cylinder of at least one of air and a mixture of air and fuel in a helical, circular flow in said cylinder;
- a super-charger for supplying air to said induction port means;
- and
- an exhaust port means for exhaustion from said cylinder of combustion gases;
- each of said pistons having a tapered crown defined by a circumferential surface and terminating in an end surface extending transversely of said piston, said tapered crowns being such that, when said pistons are adjacent their top dead center positions, said end surfaces are closely juxtaposed and said circumferential surfaces define with an intermediate section of the cylinder an annular combustion zone in which said helical circular flow is constrained, said intermediate cylinder section being provided with at least one spark plug;
- said induction port means comprising at least one induction port extending substantially tangentially of said cylinder so as to give rise to said helical, circular flow, and being located along said cylinder such that its extent axially of the cylinder is substantially within the axial extent of the induction piston crown, when the latter is in its bottom dead center position, so that the circumferential surface of that crown guides said helical circular flow;
- and
- said exhaust port means comprising at least one exhaust port extending substantially tangentially of said cylinder, and being located laterally of the crown of said exhaust piston when the latter is in its bottom dead center position so as to receive combustion gases in a continuation of said helical, circular flow;
- there being at least one spark plug for said combustion zone provided in said intermediate cylinder section.
7 more elements
Dependencies are inferred from the claim text.