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| Number | Title | Issue Date |
| 5584266 | Fuel control for multi-cylinder engine A fuel induction system for an internal combustion engine which includes a throttle valve that is positioned substantially open under idle and near idle engine running conditions. The system includes means for disabling one or many of the cylinders in ord... | 12/17/1996 |
| 5524578 | Two-cycle engine having improved idle relief An engine having an engine block defining at least two cylinders having respective cylinder heads. Pistons are reciprocal within respective ones of the cylinders. The cylinders have respective fuel inlet ports and exhaust ports and two of said cylinders h... | 06/11/1996 |
| 4932371 | Emission control system for a crankcase scavenged two-stroke engine operating near idle An engine control system is disclosed for reducing the hydrocarbon content in exhaust gas from a crankcase scavenged, two-stroke engine in the operating range near idle, with light operator induced engine loading. As operator demand for engine output powe... | 06/12/1990 |
| 4825821 | Carburetor pulse-back damping system for 2-cycle internal combustion engine Disclosed herein is a two stroke internal combustion engine comprising first and second alternately fired cylinders, first and second crankcases respectively extending from the first and second cylinders, first and second carburetors respectively includin... | 05/02/1989 |
| 4364346 | Exhaust timing control device for a two-cycle engine An exhaust timing control device for a two-cycle internal combustion engine, in which a valve member functioning as the upper edge of an exhaust port that opens into the inner circumference of a cylinder is disposed in the upper wall of an exhaust passage... | 12/21/1982 |
| 4285311 | Two stroke engine having exhaust port timing control valve Two stroke engine having an exhaust port provided with a rotary type timing control valve at the upper portion thereof. The control valve is connected with a centrifugal actuator which is responsive to the engine speed so that the exhaust port is wide ope... | 08/25/1981 |
| 4213431 | 2-Cycle engine of an active thermoatmosphere combustion type A 2-cycle engine having a transfer passage communicating the crank case with the combustion chamber. The transfer passage comprises a first passage and a second passage. The first passage has a long length and a small cross-sectional area for causing a fr... | 07/22/1980 |
| 4204488 | 2-Cycle engine of an active thermoatmosphere combustion type A 2-cycle engine having a transfer passage communicating the crank case with the combustion chamber. The transfer passage comprises a first passage and a second passage. The first passage has a long length and a small cross-sectional area for causing a fr... | 05/27/1980 |
| 4174685 | Two stroke cycle internal combustion engine A two-stroke cycle internal combustion engine wherein the cylinder is provided with spaced inlet ports with an intermediate wall section therebetween and the piston face is provided with a T-shaped guide outstanding therefrom, the center leg of the guide ... | 11/20/1979 |
| 4066050 | Two-stroke I.C. engines A two-stroke internal combustion engine has a plurality of transfer ports controlled by the movement of the piston, the transfer ports being at the ends of passages each extending from the interior of the crankcase through the cylinder wall so as to place... | 01/03/1978 |
