Internal combustion engine
AssigneeKanesaka Technical Institute Ltd.
InventorHiroshi Kanesaka
Life of this patent
Estimating the term…
Abstract
A turbocharged internal combustion engine in which a substantially constant output power is provided over a wide range of engine speeds. A turbocharger is utilized which provides its maximum output at an intermediate engine speed. A rotary valve is provided in the intake manifold passages for each of the cylinders of the engine. The valve is rotated at half the speed of the crankshaft with the phase of the valve controlled in accordance with a predetermined engine parameter such as the intake manifold pressure, the exhaust manifold pressure, or the speed of rotation of the engine.
Claims15
A turbocharged four-stroke, compression ignition type internal combustion engine having a substantially constant horsepower output above a predetermined engine speed comprising:
- at least one main piston and associated cylinder;
- a combustion chamber defined by said main piston and said cylinder;
- an intake port communicating with intake passage means;
- an exhaust port communicating with exhaust passage means;
- a crankshaft;
- a turbocharger having a turbine and a blower, said blower supplying air to said combustion chamber for supporting combustion of fuel in said combustion chamber, said turbine driving said blower and being driven by exhaust gases from said combustion chamber;
- fuel supply control means;
- control valve means for periodically opening and closing said intake passage means in response to rotation of said crankshaft, said control valve means being disposed in said intake passage means;
- means for adjusting an opening and closing timing of said control valve means in response to a predetermined engine operating parameter and means for connecting said adjusting means to said fuel supply control means so that said adjusting means controls said fuel supply control means to control an amount of fuel supplied by said fuel supply control means, said adjusting means limiting and keeping substantially constant a fuel supply and an air supply charge delivered per unit time to said combustion chamber above said predetermined engine speed.
Dependencies are inferred from the claim text.