Piston type air motor

Abstract

The invention discloses a piston type air motor, comprising a cylinder body, a piston, a cylinder, a bent axle, a connecting rod, a camshaft, an on-off device, wherein the on-off device is used for controlling an air valve; a cylinder cover is arranged on the cylinder body; inwardly-opened pressure gas inlet valve / outlet valve are arranged on the cylinder cover; an inlet cam and an outlet cam are arranged on the camshaft; the on and off of the inlet valve and the outlet valve is controlled by a rocker arm which is driven by the camshaft, wherein the camshaft is driven by the rotating bent axle via a timing chain or belt, and then high-pressure gas can be controlled to enter the cylinder to promote the reciprocating motion of the piston and to discharge low-pressure gas which completes work; the piston outputs power by driving the bent axle to rotate through the connecting rod. The piston type air motor is characterized in that a suction valve is also arranged on the cylinder cover, a suction cam is also arranged on the camshaft, the on and off of the suction valve is controlled by the rocker arm so as to control the timing for the cylinder to suck and close the air outside, and the ratio of the diameters of the cylinder to the piston stroke is 1:2-15, most preferably 1:10.

Description

technical field [0001] The invention relates to an engine, in particular to a piston type pneumatic engine using compressed air as a power source. Background technique [0002] Chinese Patent Gazette published on November 23, 2005 the Chinese invention patent "A Piston Type Pneumatic Engine for Vehicles" invented by the inventor, publication number CN1699747A. It is a piston-type pneumatic engine that uses compressed air as a power source. This machine includes a piston cylinder, and two valves are arranged on the cylinder head. The exhaust valve of low-pressure gas, the intake cam and exhaust cam of the engine camshaft control the opening or closing time of the intake and exhaust valves, and then control the entry of high-pressure gas and the discharge of low-pressure gas. High-pressure gas enters the cylinder through the intake valve , to push the piston to reciprocate, so that the crankshaft rotates to generate power output. The exhaust valve of this invention is opened...

AI Technical Summary

Problems solved by technology

[0004] This is because the intake valve is equivalent to a throttle valve when the high-pressure gas enters the cylinder, and since an exhaust valve both exhausts and inhales, the discharged low-cold compressed gas is re-inhaled and compressed, making the temperature in the cylinder higher. The lower and lower will eventually cause engine frosting and reduce the utilization rate of the working energy of the compressed gas; in addition, the resistance generated by the large-bore piston of the internal combustion engine is relatively large during compression, which reduces the power output

Images