초록 ▼

An intake system (3, 4, 9) for a reciprocating internal combustion engine adapted to control operation of the engine to produce a high level of torque across a wide range of engine revolutions. The intake system is formed by a plenum (3) feeding a plurality of manifold tubes (4) dimensioned so as to

An intake system (3, 4, 9) for a reciprocating internal combustion engine adapted to control operation of the engine to produce a high level of torque across a wide range of engine revolutions. The intake system is formed by a plenum (3) feeding a plurality of manifold tubes (4) dimensioned so as to improve volumetric efficiency of the engine by inducing ram air effects in a naturally aspirated engine over a wide range of rotational speeds.

대표청구항 ▼

[ I claim:] [1.] A reciprocating piston internal combustion engine comprising:at least one cylinder having a cylinder wall, at least one intake port and at least one exhaust port, the ports being disposed on the cylinder wall;at least one intake valve disposed at a corresponding intake port for regu

[ I claim:] [1.] A reciprocating piston internal combustion engine comprising:at least one cylinder having a cylinder wall, at least one intake port and at least one exhaust port, the ports being disposed on the cylinder wall;at least one intake valve disposed at a corresponding intake port for regulating a flow of intake gas into the cylinder;at least one exhaust valve disposed at a corresponding exhaust port for regulating a flow of exhaust gas out of the cylinder;a piston in the cylinder mounted for reciprocal motion within the cylinder, the piston further being adapted to assume a bottom dead center position and a top dead center position; anda plurality of manifold tubes comprising:a least one intake manifold tube connected to a corresponding intake port;at least one exhaust manifold tube connected to a corresponding exhaust port;wherein each of the intake manifold tubes comprises a plurality of pipes connected end to end and including an end pipe disposed closest to a corresponding port, each of the pipes having a constant cross-section, the cross section of the pipes increasing incrementally in a direction away from the end pipe, and a tapered portion being connected to the end pipe at the exit end thereof, and to an adjacent one of the pipes at the entry end thereof; andfurther including a plenum chamber device comprising an intake manifold, the intake manifold having at least one manifold outlet connected to a corresponding intake manifold tube, the plenum chamber device thereby being disposed upstream of and in flow communication with the intake port.