Air supply device and system of engine

Abstract

The invention relates to an air supply device of engine and air supply system. The device comprises a shell. An air saving ring is set in the cavity of shell and the air saving ring is divided into upper and lower cavities. Main metering hole is set in the middle of air saving ring. Communicating hole connected with outside is set at the top of upper cavity and a linkage bar is set in the communicating hole and the main metering hole. The lower end of linkage bar is connected with a cone oil needle. An air inlet hole is set at the wall of upper cavity and an air outlet hole is set at the wall of lower cavity. The system comprises air filter, linkage mechanism of air saving gate and said air supply device. The air outlet hole of air filter is connected with the air inlet hole by pipes and the linkage mechanism of air saving gate is connected with end of linkage bar. The air outlet hole is connected with the air inlet hole of engine by pipes. The invention controls air supply flux and changes air-fuel ratio by linkage control of air saving gate. It can ensure the working stability of engine according to the working time of air supply system controlled by the engine temperature.

Description

technical field [0001] The invention relates to an engine air replenishing device and an air replenishing system, in particular to an engine automatic air replenishing device for improving the combustion efficiency of the engine and an engine automatic air replenishing system formed by the device. Background technique [0002] Along with the rapid development of transportation, people more and more adopt automobiles and motorcycles as walking-replacing or means of transportation. At present, the number of cars and motorcycles in cities has increased rapidly, which has greatly improved the efficiency of social life and work. However, while cars and motorcycles facilitate people's travel and work, they also affect the urban atmospheric environment. caused great pollution. Generally, the harmful components in the exhaust gas of the engine are CO and HC, and these harmful components are intermediate products produced by incomplete combustion. [0003] In order to reduce the em...

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Problems solved by technology

[0003] In order to reduce the emission of these harmful components, the existing method is to add a secondary air intake device to the exhaust system of the engine, and use the oxygen in the fresh air to reduce the content of CO / HC in the exhaust gas, so that the CO / HC in the fresh air Oxygen reacts with CO and HC in the exhaust gas at high temperature and generates and H 2 O, thereby reducing the content of harmful substances in the emissions. This newly added secondary air intake device can reduce harmful emissions, but the secondary air intake device usually needs to put an expensive catalyst, which is very expensive and converts The efficiency is not high, and this secondary air intake device cannot improve the fuel efficiency of the engine

[0004] Now there is also a design to improve fuel efficiency and reduce emissions by improving the atomization of the mixed oil and gas, but this design cannot dynamically adjust the air-fuel ratio, so it cannot effectively reduce harmful gas emissions in the case of complex load changes. does not improve fuel efficiency

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