US 5,671,704 A · Cylinder head with colander valve

Abstract

A cylinder head with single colander valve per cylinder for internal combustion engines (IC engine) and the like is provided. The single colander valve per cylinder has significantly enlarged valve open area and remains fully open at the end of the exhaust stroke and at the beginning of the intake stroke. The volumetric efficiency of IC engines, therefore, is significantly improved. The cylinder head with single colander valve per cylinder and support members of the present invention is practical because of the following features: single colander valve per cylinder has light weight and operates under low temperature. Some of advantages associated with these features are the following: (a) single colander valve has greater durability, (b) the compression ratio of IC engines may be raised, (c) dynamic effects on the valve train are reduced, (d) the speed of IC engines is increased, (e) the polluting emission is reduced, and (f) the fuel economy is improved. Also colander valves, which have different combinations of face-down aperture(s) and/or face-up aperture(s) disposed on the heads of the colander valves, are provided for IC engines, which have at least two valves per cylinder, and the like. Overall the present invention improves the comprehensive performance of IC engines and the like.

Claims17

Dependent claims

A cylinder head with a single colander valve per cylinder having an intake port and an exhaust port for internal combustion engines (IC engine) and the like and said IC engines defining a combustion chamber, comprising in combination:

(a) the single colander valve per cylinder alternately controlling the fuel-air mixture or air flowing into said combustion chamber and the exhaust gases flowing out of said combustion chamber and wherein said colander valve including a stem, a head, and a face disposed around the perimeter of said head and wherein said head including at least one aperture disposed through it;
(b) primary timing means for timing said colander valve;
(c) sealing means for accordingly sealing and opening said aperture(s) without adding weight to the valve train of said colander valve;
(d) a prior-to-combustion chamber alternately communicating with said combustion chamber, said intake port, and said exhaust port and wherein said prior-to-combustion chamber is positioned between said combustion chamber, said intake port, and said exhaust port;
and
(e) secondary intake/exhaust means for alternately controlling fuel-air mixture or air flowing into said prior-to-combustion chamber and exhaust gases flowing out said prior-to-combustion chamber.

3 more elements

A colander valve and support members for an internal combustion engine (IC engine) and the like comprising in combination:

(a) a colander valve alternately controlling the fuel-air mixture or air flowing into the combustion chamber of said IC engine and the exhaust gases flowing out said combustion chamber and wherein said colander valve having a stem, a head, and a face disposed around the perimeter of said head and wherein said head having at least one face-down aperture disposed there through and wherein said aperture(s) having valve seat(s);
(b) at least one secondary valve sized to fit sealably within said face-down aperture(s) respectively;
(c) jointing means for supporting said secondary valve(s) connecting said secondary valve(s) to the cylinder head of said IC engine and allowing said secondary valve(s) moving up and down freely to seal and open said face-down aperture(s) respectively;
and
(d) timing means for timing said secondary valve(s) in cooperation with the timing of said colander valve.

2 more elements

Dependencies are inferred from the claim text.

Cylinder head with colander valve

Life of this patent

Cylinder head with colander valve

Life of this patent

Abstract

Claims17