Abstract:
Improvements in a fuel injected, internal combustion engine having a first passage for flow of air into the combustion chamber and exit of exhaust gases from the combustion chamber and a single poppet valve opened and closed in timed relation to rotation of the engine's crank shaft to control flow of gases through such first passage, an inlet air passage and an exhaust gas passage each communicating with the first passage and one another and a diverter valve movable in timed relation to operation of the poppet valve selectively to direct, in one position, air into the combustion chamber through the inlet passage and, in another position, exit of exhaust gases through the outlet passage wherein the improvement comprises a separate small passageway in parallel flow relation with the intake air into the combustion chamber which directs supercharged air into the combustion chamber when the diverter valve is in the exhaust position to purge the engine.
Abstract:
A four-stroke piston engine in which air or a fuel-air mixture is drawn into a cylinder. Fuel may be injected into the air flowing into or already present in the cylinder while a further fuel supply is located on the axis of the cylinder and supplies at least one jet of fuel during the compression stroke, which jet of fuel in cooperation with the fuel-air mixture forms at least one zone of enriched mixture within the cylinder. The piston may have a recess in the upper end into which the fuel nozzle is received when the piston approaches top dead center so that an enriched zone is formed in the recess or in the region of said recess which can be ignited by electrodes disposed adjacent the further fuel supply.
Abstract:
An internal combustion engine of the four cycle reciprocating piston type wherein intake and exhaust of working fluid and combustible fuel into the engine cylinder is controlled by poppet valve means, while induction air is diverted by rotary valve means between intake and exhaust, said valve means being operated in timed relation with respect to each other at half crank shaft speed of rotation, utilizing blower induction of air as the working fluid which is diverted between intake and exhaust, and advantageously employing fuel injection through a valve plenum that is ported and through which the working fluid is controlled by the cooperatively timed rotary and poppet valve means.
Abstract:
An intake valve structure for use in an internal combustion engine wherein a conventional intake poppet valve operable in the normal manner slidably carries an auxiliary intake valve in the form of a tubular poppet valve which is normally spring-biased into closed position upstream of the intake poppet valve but which can be opened by differential pressure existing between the intake manifold and the cylinder with which this intake valve structure cooperates during the time interval when the intake poppet valve is open.
Abstract:
An inlet valve means and method for supplying a combustible mixture to the combustion chamber of an internal combustion engine is described. The inlet valve means includes concentrically arranged sections defining a main valve means and an auxiliary valve means. The auxiliary valve means defines a flow passage into the combustion chamber which is inboard of the flow passage defined by said main valve means. During supply of fuel to the combustion chamber the auxiliary valve means and the main valve means are sequentially opened, whereby the supply of fuel is initially constrained to the central portion of said combustion chamber for improved combustion and increased engine efficiency.