Patent ID: 8578908

Claim:
A dual-rotor engine comprising a cylinder assembly, a transmission output mechanism, a rotor control mechanism and a lubrication system, wherein the cylinder assembly comprises: a base; a tubular cylinder fixedly installed on the base; a front and rear end cover installed on opposed ends of the tubular cylinder, each of the front and rear end covers being provided with a rotor journal aperture; a center supporting shaft passing through the tubular cylinder and rotatably installed on the base at two ends thereof; and a first and second rotor fixedly installed on the center supporting shaft, each of which comprises an inner cylindrical cylinder, a rotor journal integrated with the inner cylindrical cylinder and two sector pistons fixedly connected to the inner cylindrical cylinder symmetrically, two rotor journals protruding outward from the corresponding rotor journal aperture respectively, the two rotors having four sector pistons arranged crosswise to each other, both sides of each sector piston being provided with a recess respectively, adjacent recesses of two adjacent sector pistons defining a combustion chamber that has an indentation oriented towards the inner cylindrical cylinder, wherein: the transmission output mechanism comprises a transmission output shaft installed in parallel with the center supporting shaft, a first and second rotor gear installed on the two rotor journals, and a first and second driving gear installed on the transmission output shaft, wherein the first rotor gear is engaged with the first driving gear, and the second rotor gear is engaged with the second driving gear; each of the first and second rotor gears is provided with two toothless portions in a circumference direction symmetrically, the length and shape of the toothless portion are identical to those of the portion where the rotor gear is engaged with the driving gear, such that the operation of the first and second driving gears will not be interfered when the first and second rotor gears are locked up; two toothed segments of the first and second rotor gears have the same tooth number, and the tooth profiles at the beginning of the two toothed segments are identical so as to ensure transmission precision; the rotor control mechanism is used for controlling intermittent rotation and stop of the two rotors and for controlling rotating time and stopping time, so as to ensure that the power is outputted smoothly in a constant speed.