Turbocharging system

Abstract

The invention discloses a turbocharging system which can work in a wider flow range and can improve acceleration hysteresis phenomenon when in low-rotating-speed. The turbocharging system specifically comprises a waste gas inlet, a waste gas outlet, an air inlet pipeline, a turbocharging device and an intercooler, wherein a worm wheel of the turbocharging device is arranged in a pipeline between the waste gas inlet and the waste gas outlet, a gas compressor of the turbocharging device is arranged in the air inlet pipeline, an air outlet of the gas compressor is communicated with an air outletof the intercooler, an air outlet of the gas compressor is communicated with an air inlet of a gas storage bottle through a one-way valve, and an air outlet of the gas storage bottle is communicated with an air inlet of the intercooler through a pipeline valve. The turbocharging system disclosed by the invention has a simple structure, and can be used for storing partial waste gas energy under a high-rotating-speed working condition in a form of compressed gas to be used for urgent acceleration of an engine while the demand of normal running of the engine is met, thereby improving the acceleration hysteresis phenomenon when in the low-rotating-speed.

Description

technical field [0001] The invention belongs to the technical field of engine manufacture, and in particular relates to a turbocharging system. Background technique [0002] The turbocharger system can use the exhaust gas generated by the internal combustion engine to drive the air compressor to increase the air flow into the internal combustion engine, thereby improving the efficiency of the internal combustion engine. In the existing turbocharging system, due to the characteristics of the turbine itself, the turbocharger can only work within a certain flow range. In different working conditions of the engine, the exhaust gas flow fluctuates greatly, so in order to make the turbocharger adapt to this situation, the following two solutions are generally adopted: 1. Use the variable turbine geometry mechanism to adjust the exhaust gas flow, For example, the patent No. CN200780005301.1 proposes to control the flow of exhaust gas by using the flow channel formed by the rotatab...

AI Technical Summary

Problems solved by technology

In different working conditions of the engine, the exhaust gas flow fluctuates greatly, so in order to make the turbocharger adapt to this situation, the following two solutions are generally adopted: 1. Use the variable turbine geometry mechanism to adjust the exhaust gas flow, For example, the patent No. CN200780005301.1 proposes to control the flow of exhaust gas by using the flow channel formed by the rotatable blades. The blades of the exhaust gas flow are often blocked by impurities in the exhaust gas, and lose their ability to adjust the exhaust gas flow; 2. In the middle and high speed conditions, the exhaust gas discharged by the engine exceeds the requirement, and the excess exhaust gas is flowed into the exhaust gas treatment system by using the bypass system , the disadvantage of this solution is that the overall efficiency is low, because the excess exhaust gas energy is directly discharged

[0003] In addition, since the turbocharger drives the compressor to compress the intake air through the exhaust gas work, when the speed is low and sudden acceleration is required, the acceleration hysteresis phenomenon unique to the turbocharger is caused due to the slow increase of the intake air volume.

Images