ROTARY INTERNAL COMBUSTION ENGINE WITH VARIABLE VOLUMETRIC COMPRESSION RATIO

摘要

A method of controlling an air intake flow in a rotary engine having primary and secondary inlet ports, including positioning the secondary inlet port rearwardly of the primary inlet port and forwardly of the exhaust port along a direction of a revolution of the rotor, and controlling air intake flows communicating between an air source and the primary and secondary inlet ports. During engine start-up, a primary valve is closed to prevent the intake air flow between the primary inlet port and the air source and a secondary valve is opened to allow the intake air flow between the secondary inlet port and the air source. A rotary engine defining different compression ratios through actuation of a valve is also discussed.

主权项

1. A method of controlling an air intake flow in a rotary engine having a rotor received in an internal cavity of a housing and defining rotating chambers with variable volume, the rotary engine having a primary inlet port, a secondary inlet port, a primary valve, a secondary valve and an exhaust port, the secondary inlet port being in communication with the exhaust port through each of the rotating chambers throughout respective portions of the revolution of the rotor, the method comprising:
positioning the secondary inlet port rearwardly of the primary inlet port and forwardly of the exhaust port along a direction of a revolution of the rotor; controlling air intake flows communicating between an air source and the primary and secondary inlet ports, including:
during engine start-up, closing the primary valve to prevent the intake air flow between the primary inlet port and the air source and opening the secondary valve to allow the intake air flow between the secondary inlet port and the air source.