Composite supercharging air inlet system of two-stroke engine with horizontally-opposed piston and opposed cylinder

Abstract

The invention discloses a composite supercharging air inlet system of a two-stroke engine with horizontally-opposed piston and opposed cylinder, comprising a turbosupercharger, a mechanical supercharger, intercoolers, a flywheel casing and related air inlet pipes. In work, air from an air filter enters the volute of the mechanical supercharger via the related air inlet pipes, is supercharged and then reaches the first stage of intercooler through the air inlet pipe, is subjected to intercooling and then reaches the turbosupercharger through the air inlet pipe, is supercharged again and then reaches the second stage of intercooler along the air inlet pipe, is subjected to intercooling again and then reaches a voltage stabilizing chamber in the flywheel casing through the air inlet pipe, and finally reaches the air inlet channel of the engine through the pipe, thus realizing two stages of supercharging. When the engine is in low revolution speed, supercharging pressure is provided mainly by the mechanical supercharger, which is favorable for improving the scavenging and torque output when the engine is in low revolution speed; and along with promotion of the rotation speed of the engine, the turbosupercharger starts to provide more supercharging pressure, and due the common effect of the two, the requirement of supercharging of the engine can be met.

Description

technical field [0001] The invention relates to the technical field of two-stroke engines, in particular to a compound supercharged air intake system for a two-stroke engine with horizontally opposed pistons and opposed cylinders. Background technique [0002] The horizontally opposed engine, with its unique engine structure and working principle, can obtain higher mechanical efficiency and combustion efficiency than traditional engines. Especially for two-stroke horizontally opposed piston and opposed cylinder engines, because of their compact structure (the axial size and overall height are smaller than those of traditional engines with the same power), their energy density (power per liter, specific weight) can reach the highest level in the same industry. High technical level (≥90kW / L, ≥1.9kW / kg), it is also attracting the attention of the industry because of these two advantages. [0003] In order to meet the requirements of two-stroke horizontally opposed piston, oppo...

AI Technical Summary

Problems solved by technology

[0003] In order to meet the requirements of two-stroke horizontally opposed piston, opposed cylinder engine scavenging, high torque and high power output, due to the limitations of the traditional turbocharging system (low efficiency at low speed, small flow rate, poor response, etc.) and mechanical supercharging Due to the disadvantages of low system speed, low altitude flow, and large power loss, if only a single supercharging method (mechanical supercharging or turbocharging) is used, it will be difficult to meet the requirements of a two-stroke horizontally opposed piston and opposed cylinder engine.

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