RU112277U1 - VEHICLE EXHAUST GAS SYSTEM FOR VEHICLE ENGINE - Google Patents

Abstract

The exhaust system of an internal combustion engine of a vehicle containing an internal combustion engine, an intake pipe, an air filter, a compressor, a turbine, an exhaust pipe, a muffler, an exhaust channel, an air diffuser with a narrow flow path, characterized in that it contains an exhaust pipe equipped with a free flap.

Description

The utility model relates to mechanical engineering, namely to engine building and can be used to increase engine power and reduce specific effective fuel consumption when driving a vehicle.

A device is known for increasing the power of a turbocompressor, increasing engine power and decreasing specific effective fuel consumption when driving a vehicle, comprising an inlet pipe, a turbocompressor, an exhaust pipe, a silencer and an air diffuser connected by a narrow flow part to an exhaust channel (RF Patent No. 2324058 class F02B 37/02, 2006 g).

The disadvantage of this device is that it only works when the vehicle is moving at a sufficiently high speed. And when the engine is running, when the vehicle is stationary or moving at low speed (urban mode with limited movement), a local pressure drop is not created in the air diffuser, due to which the pressure drop at the inlet and outlet of the turbocharger turbine increases. In addition, in the absence of atmospheric air movement through the air diffuser, the exhaust gases meet resistance in the air diffuser (counterpressure increases), which leads to a decrease in the power of the turbocharger and a decrease in charge air pressure with a decrease in the effective engine power and an increase in the specific effective fuel consumption.

This device design is the closest to the proposed technical essence and adopted as a prototype.

The objective of the proposal is to increase the power of the turbocharger, increase engine power and decrease the specific effective fuel consumption when driving a vehicle, as well as eliminate the resistance to exhaust gases in the air diffuser when the vehicle is stationary or moving at low speed (urban mode with limited traffic) , which will lead to an increase in engine power and a decrease in the specific effective fuel consumption.

The solution to this problem is achieved by the fact that the exhaust system is equipped with an exhaust pipe with a free damper, which allows exhaust gases, when the vehicle is moving at low speed or being in place (urban mode with limited movement), to enter the surrounding atmosphere without resistance.

An analysis of the proposed and known solutions allows us to conclude that it meets the conditions of patentability of a utility model.

The proposal is illustrated in the figure (figure 1), which shows the exhaust system of the internal combustion engine of the vehicle.

The proposed exhaust system of an internal combustion engine of a vehicle comprises an internal combustion engine 1, an intake pipe 2, an air filter 3, a compressor 4, a turbine 5, an exhaust pipe 6, a muffler 7, a free shutter 8 in the exhaust pipe 9, an air diffuser 10 with a narrow flow part, exhaust channel 11.

The proposed exhaust system of an internal combustion engine of a vehicle operates as follows.

When the vehicle moves at a sufficiently high speed, atmospheric air enters through the air filter 3 into the compressor 4, and under pressure through the inlet pipe 2 enters the cylinders of the internal combustion engine 1. The exhaust gases through the exhaust pipe 6 enter the turbine 5, then through the muffler 7, the exhaust channel 11 enters the narrowest flowing part of the air diffuser 10. The free shutter 8 is thus closed and does not allow atmospheric air to enter the exhaust through the exhaust pipe 9 channel 11 into the air diffuser 10. When the vehicle is moving, an increase in the speed of the incoming air flow in the narrow part of the diffuser 10 is created, as a result of which the pressure in the diffuser decreases and a vacuum forms. Exhaust gases under the influence of this vacuum in a narrow part of the air diffuser 10 are discharged into the atmosphere (the pressure differential at the inlet and outlet of the turbocharger turbine increases), which leads to an increase in turbocharger power and an increase in charge air pressure, and therefore, an increase in effective power and a decrease in specific effective flow rate fuel.

When the vehicle stands still or moves at low speed (urban mode with limited movement), atmospheric air enters through compressor 3 through air filter 3, and under pressure through inlet pipe 2 enters the cylinders of internal combustion engine 1. Exhaust gases through the exhaust pipe 6 enter the turbine 5, then through the muffler 7, the exhaust channel 11 enters the narrowest flowing part of the air diffuser 10 and meets the outlet resistance, as a result of which the exhaust pressure of gases in the exhaust channel 11 after the muffler 7 rises, the free damper 8 opens and the exhaust gases, without encountering resistance, exit through the exhaust pipe into the atmosphere, which does not lead to a decrease in turbocharger power and a decrease in charge air pressure, a decrease in effective power and an increase in specific effective flow rate fuel, thereby maintaining the normal operation of the internal combustion engine.

Compared with the prototype, the proposed exhaust system of the vehicle’s internal combustion engine, when the vehicle is moving at low speed (urban mode with limited movement), eliminates the resistance to exhaust gas output in the air diffuser, which eliminates the reduction in engine power and an increase in specific effective consumption fuel.

These features of the proposed exhaust gas system of an internal combustion engine of a vehicle indicate that the task has been achieved - increasing the power of the turbocharger, increasing engine power and reducing the specific effective fuel consumption when the vehicle is moving at a sufficiently high speed by eliminating the resistance to the exhaust of the exhaust gases in the air diffuser, when the vehicle is moving at low speed (urban mode with limited m movement).

Claims (1)

An exhaust gas exhaust system of a vehicle internal combustion engine, comprising an internal combustion engine, an inlet pipe, an air filter, a compressor, a turbine, an exhaust pipe, a silencer, an exhaust channel, an air diffuser with a narrow flow part, characterized in that it contains an exhaust pipe equipped with a free damper.