초록 ▼

A reciprocating internal combustion engine has at least one camshaft for actuating intake and exhaust valves and a camshaft drive for rotating the camshaft and for adjusting the rotational timing of the camshaft with respect to the crankshaft. A charge motion control valve and the variable camshaft

A reciprocating internal combustion engine has at least one camshaft for actuating intake and exhaust valves and a camshaft drive for rotating the camshaft and for adjusting the rotational timing of the camshaft with respect to the crankshaft. A charge motion control valve and the variable camshaft timing mechanism are both used to selectively impart angular momentum to charge entering the engine's cylinder(s).

대표청구항 ▼

[ We claim:] [1.] A reciprocating internal combustion engine having at least one cylinder with a piston, a crankshaft, a connecting rod joining the piston and the crankshaft, an intake manifold, and intake and exhaust poppet valves servicing the cylinder, with said engine further comprising:a single

[ We claim:] [1.] A reciprocating internal combustion engine having at least one cylinder with a piston, a crankshaft, a connecting rod joining the piston and the crankshaft, an intake manifold, and intake and exhaust poppet valves servicing the cylinder, with said engine further comprising:a single camshaft for actuating said intake and exhaust valves;a camshaft drive for rotating the camshaft and for adjusting the rotational timing of the camshaft with respect to the crankshaft, with the camshaft having a base timing;a charge motion control valve for selectively imparting angular momentum to charge entering the cylinder; anda controller for operating the camshaft drive and the motion control valve, with the controller operating the camshaft drive to progressively retard the camshaft timing until the engine reaches a predetermined operating condition corresponding to maximum practicable retard.