Engine liquid-gas separation device, engine and automobile

The invention discloses an engine liquid-gas separation device, an engine and an automobile. The engine liquid-gas separation device comprises a separation chamber mounting plate, a spiral channel, an outlet baffle, an outlet opening and an outlet container. In the scheme provided by the invention, a liquid and gas mixture is separated through the combined design of the mounting plate, the spiral channel, the outlet baffle, the outlet opening and the outlet container, wherein the spiral channel makes the liquid and gas mixture well separated from each other under the action of a centrifugal force, the outlet baffle blocks the liquid and gas mixture flowing out of the outlet of the spiral channel, which makes liquid in the liquid and gas mixture separated from gas for the second time when impacting the outlet baffle, and the separated liquid flows into the outlet container through the outlet opening; and compared with the prior art, the liquid and gas mixture is well separated.