Air inlet manifold of engine and engine

Abstract

The invention provides an air inlet manifold of an engine and the engine comprising the air inlet manifold. A pressure stabilizing cavity and an auxiliary cavity adjacent to the pressure stabilizing cavity are formed in the air inlet manifold of the engine. The pressure stabilizing cavity communicates with the auxiliary cavity. The pressure stabilizing cavity is connected with an air outlet pipe. The air outlet pipe is connected with an air cylinder of the engine. The auxiliary cavity is connected with a crankcase ventilation pipe connector and a carbon tank electromagnetic valve pipe connector. A partition plate is arranged between the pressure stabilizing cavity and the auxiliary cavity. At least one communication hole is formed in the partition plate. The pressure stabilizing cavity communicates with the auxiliary cavity through the communication holes. By the adoption of the air inlet manifold of the engine, crankcase waste gas, fuel steam and fresh air which enter the air inlet manifold can be evenly mixed, and condensate water in a crankcase ventilation system is prevented from flowing into an electronic throttle valve.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to an engine intake manifold and an engine comprising the engine intake manifold. Background technique [0002] The engine intake manifold is an important part of the engine, and its function is to ensure uniform intake and normal operation of the engine. At present, the volume of the engine, especially the supercharged gasoline engine, is getting smaller and smaller, and the volume of the intake manifold is also getting smaller and smaller; and in order to reduce fuel consumption and make the exhaust gas meet the emission requirements, the electronic devices and pipes arranged on the intake manifold There are more and more circuits and connectors, and it is more and more difficult to arrange these electronic components and connectors rationally. [0003] figure 1 It is a structural schematic diagram of an engine intake manifold 100 in the prior art. The engine intake manifold 100...

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Problems solved by technology

[0004] In the prior art, the crankcase intake connector 12 and the carbon tank intake connector 13 are arranged on the plenum chamber 11, and the plenum chamber 11 has a small layout space and a small volume, resulting in crankcase exhaust gas, fuel vapor and fresh air. The air is not mixed evenly in the plenum chamber and enters the engine cylinder for combustion, resulting in poor performance, economy, emissions and NVH; on the other hand, the condensed water flowing from the crankcase into the plenum chamber will flow into the lower part of the plenum chamber The electronic throttle valve 16, so that the electronic throttle valve 16 has the risk of freezing failure

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