Continously variable valve timing valve actuating mechanism piston IC engine

Abstract

The invention is a piston internal-combustion engine with continuously variable valve timing mechanism, characterized by that: it adopts a structure of main and auxiliary gas inlet and outlet cam shafts, where each cam shaft can control corresponding gas inlet and outlet valves, the main cam shaft controls ON / OFF of main gas inlet and outlet valves, and the auxiliary one controls ON / OFF of auxiliary gas inlet and outlet valves. And it can control ON / OFF time and ON-to-OFF time of the gas inlet and outlet valves by continuously varying valve timing of the gas inlet and outlet cam shafts, thus further improving effective power and thermal efficiency of internal-combustion engine and reducing fuel oil consumption and pollutant discharge.

Description

Technical field [0001] A continuously variable valve timing valve mechanism piston internal combustion engine, especially a continuously variable valve timing arrangement that controls the opening and closing and duration of the intake and exhaust valves by continuously changing the phase of the intake and exhaust camshafts Pneumatic piston internal combustion engine. Background technique [0002] At present, the continuously variable valve timing mechanism of the known piston internal combustion engine can only control the opening and closing time of the intake and exhaust valves by changing the timing of the intake and exhaust valve camshafts, but cannot control the intake and exhaust valves from opening to closing. duration. Thereby limiting the further improvement of the effective power and thermal efficiency of the internal combustion engine through the continuously variable valve timing system, the reduction of fuel consumption and the improvement of pollutant emissio...

AI Technical Summary

Problems solved by technology

[0002] At present, the continuously variable valve timing mechanism of the known piston internal combustion engine can only control the opening and closing time of the intake and exhaust valves by changing the timing of the intake and exhaust valve camshafts, but cannot control the opening and closing of the intake and exhaust valves. duration of

This limits the further improvement of the effective power and thermal efficiency of the internal combustion engine, the reduction of fuel consumption and the improvement of pollutant emission performance through the continuously variable valve timing system

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