Energy-saving engine and exhaust control method for same

Abstract

The invention discloses an energy-saving engine and an exhaust control method for the same. The engine comprises a cylinder body and a cylinder cover, wherein the cylinder cover is arranged on the cylinder body; a main valve corresponding to the cylinder body is arranged on the cylinder cover; an intake passage and an exhaust passage are communicated at the main valve in the cylinder cover; an intake valve is arranged in the intake passage; an exhaust valve is arranged in the exhaust passage; an auxiliary exhaust valve is arranged in the main valve; an air vent corresponding to the auxiliary exhaust valve is formed in the main valve, and is communicated with the exhaust passage. According to the engine and the method, the area of the exhaust valves is enlarged, the exhaust valves are sequentially opened, and the auxiliary exhaust valve is opened first to reduce pressure, so that the opening energy consumption and the exhaust resistance of the main valve are reduced, the heat power conversion rate of the engine is increased, and a fuel is saved.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to an energy-saving engine and an exhaust control method thereof. Background technique [0002] At present, most engines are reciprocating piston engines, and the work of reciprocating piston engines is divided into four strokes: power stroke, exhaust stroke, intake stroke, and compression stroke. [0003] In the engine exhaust stroke, it is divided into two stages: free exhaust and forced exhaust. Free exhaust stage: in order to discharge exhaust gas in time, early exhaust is adopted, that is, when the piston has not reached the bottom dead center, it will Open the exhaust valve, and use the pressure of the gas itself to discharge part of it naturally; the forced exhaust stage: when the piston moves upward, the exhaust is forced to discharge the remaining gas out of the cylinder. [0004] The existing exhaust stroke has the following deficiencies: [0005] 1. In order to discharg...

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Problems solved by technology

[0007] 3. The two exhaust valves corresponding to each cylinder of the existing engine are opened at the same time when exhausting, and the pressure in the cylinder is very high when opening, which will cause a large energy consumption to open the exhaust valve

[0008] The existing engine also has the following disadvantages. When the engine performs the compression stroke, it also inhales the mixed gas of the full cylinder to compress when it is idle and under low load. The non-working gas compression will inevitably cause unnecessary waste of energy

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