Valve train without switch valve

Abstract

The invention discloses a valve train without a switch valve. The valve train comprises an intake duct (1), an exhaust duct (2), a right-handed gas distribution seat (6), a cylinder cover (66), and a right-handed internally opened intake and exhaust air valve (3) which is arranged on an axis of the right-handed gas distribution seat (6) in a cavity in which the intake duct (1) and the exhaust duct (2) are communicated, the right-handed internally opened intake and exhaust air valve (3) is controlled by an air valve control system (45) to open or close the right-handed gas distribution seat (6) according to a timing relation, an intake air compressing apparatus (11) is arranged on the intake duct (1), an exhaust duct power set (22) is arranged on the exhaust duct (2), the intake air compressing apparatus (11) is driven by the exhaust duct power set (22) and is of a turbo type or piston type intake air compressing apparatus, and the exhaust duct power set (22) is of a turbo type or piston type exhaust duct power set. The valve train has the advantages of simple structure, high reliability, high gas distribution efficiency and high precision.

Description

technical field [0001] The invention relates to the field of internal combustion engines. technical background [0002] The applicant disclosed a reverse-installed externally opened inlet and exhaust common valve body in the patent application for the interface gas distribution engine (patent application number: 200710165230.3 and patent number: ZL200720195428.1). However, in order to prevent problems such as deep filling of exhaust gas into the intake port and exhaust backflow, it is necessary to arrange corresponding intake and exhaust switching devices and their driving mechanisms on the intake and exhaust ports. This mechanism is complicated and affects the advantage of the shared air valve body for intake and discharge. Therefore, it is necessary to invent a new type of valve mechanism that replaces the intake and exhaust switching devices (such as the hollow rotor and its driving mechanism) and is built on the basis of reverse-installing the external opening and exhau...

AI Technical Summary

Problems solved by technology

Such as US5782215 intake and exhaust switching mechanism is complex and difficult to control, ZL200520001125.2 intake and exhaust switching uses intake throttle and exhaust throttle, the same structure is complex and difficult to control

Not only that, if any of these two methods is used to switch the intake and exhaust to match the internal combustion engine with the common intake and exhaust valves in the formal installation, it will seriously affect the advantages of the common intake and exhaust valves, because the valve body is used to control the intake and exhaust. Fundamentally speaking, it is similar to the traditional gas distribution method, and it also has the disadvantages of the traditional gas distribution method, such as the effective opening and effective opening time are severely limited, etc.

Patent WO2004 / 044389 A1, although improved, but in this way the intake pressure will be severely reduced and the efficiency of the internal combustion engine will be affected

Images