Intake and exhaust systems for supercharged internal combustion engine

A technology of air intake system and exhaust system, applied in the direction of fuel air intake, internal combustion piston engine, exhaust device, etc., can solve the problems of compressor surge, sudden change of intake pressure of diesel engine, low boosting efficiency, etc. Achieve the effect of increasing flow and avoiding surge

Active Publication Date: 2010-09-01
谢国华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Compared with the naturally aspirated internal combustion engine of the same power, the current turbocharged internal combustion engine has a longer acceleration process time and slower transient response speed; the supercha

Method used

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  • Intake and exhaust systems for supercharged internal combustion engine
  • Intake and exhaust systems for supercharged internal combustion engine
  • Intake and exhaust systems for supercharged internal combustion engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as figure 1 , is a four-stroke three-cylinder (corresponding cylinder number is I-III) mechanically supercharged intake and exhaust system, the intake system includes: 2 intake pipes J1, J2, and a compressor Y1 of a supercharger; The inlet of the compressor Y1 is connected to the air filter 10, the outlet of the compressor Y1 is connected to the inlet of the intake pipe J1; the inlet of the intake pipe J2 is directly connected to the air filter 10; the two intake pipes J1, J2 are connected to the intake There is one air intake auxiliary control valve F1 between the channels 1-J; the air intake pipe J1 is directly connected with the air intake channels 2-J and 3-J; the air intake auxiliary control valve F1 of the air intake channel 1-J The opening and closing correspond to the phase of the gas distribution timing of the intake valve of the first cylinder of the internal combustion engine, so that the complete intake process of the intake port 1-J is divided into two...

Embodiment 2

[0048] Such as Figure 6 , an optimized intake and exhaust system for a four-stroke six-cylinder (corresponding to cylinder number I-VI) turbocharged internal combustion engine, the intake system includes: 2 intake pipes J1, J2, a turbocharger compressor Y1 (to form a turbocharger with the turbine W1 of the exhaust system); the inlet of the compressor Y1 is connected to the air filter 10, the outlet of the compressor Y1 is directly connected to the inlet of the intake pipe J1; the inlet of the intake pipe J2 is directly connected to the The air filter 10 is connected; there is an intercooler Z1 (cooling the supercharged air) in the pipeline of the air intake pipe J1; two air intake pipes are respectively arranged between the two air intake pipes J1, J2 and each air inlet. Air-assisted control valves F1, F2; the opening and closing of the air-intake auxiliary control valves connected to the six intake ports 1-J, 2-J, 3-J, 4-J, 5-J, and 6-J correspond to the internal combustion ...

Embodiment 3

[0064] Such as Figure 12 , is an optimized intake and exhaust system for a four-stroke six-cylinder (corresponding to cylinder number I-VI) turbocharged + supercharged internal combustion engine. The intake system includes: 2 intake pipes J1, J2, a turbocharger The compressor Y1 of the exhaust system (which forms a turbocharger with the turbine W1 of the exhaust system) and an electric compressor Y2; there are two intake auxiliary control valves between the two intake pipes J1, J2 and each intake port Valves F1, F2; the inlet of compressor Y1 is connected with air filter 10, the outlet of compressor Y1 is directly connected with the inlet of intake pipe J1; the inlet pipe J1 has two outlets, one outlet is connected with the inlet of auxiliary control valve F1 , the other outlet is connected to the inlet of compressor Y2 through the low-speed flow control valve F10; the outlet of compressor Y2 is directly connected to the inlet of the intake pipe J2; the outlet of the intake p...

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Abstract

The invention discloses an intake system and an exhaust system for a supercharged internal combustion engine in the field of internal combustion engines, which comprises the intake system and the exhaust system of the internal combustion engine. The inlet of the intake system is connected with an air filter or directly communicated with air; the outlet of the intake system is connected with an intake passage of the internal combustion engine; the inlet of the exhaust system is connected with an exhaust passage of the internal combustion engine, and the outlet of the exhaust system is connected with a main smoke exhaust pipe; the intake system at least makes the overall intake process of the intake passage of one cylinder divided into at least two intake durations, and makes the gas with different pressures pass through the intake passage during the divided intake duration and the gas with the same pressure pass through the intake passages of other cylinders in the overall intake process. The system can allow the gas with different pressures to sequentially enter the cylinder during different intake durations in sections so as to improve the transient response speed of the turbocharged internal combustion engine or the supercharging efficiency of mechanical supercharging; and the system also can realize the flow adjustment of a plurality of superchargers and better cooperative work of the plurality of superchargers.

Description

technical field [0001] The invention relates to an intake and exhaust system of a four-stroke supercharged internal combustion engine. Background technique [0002] Internal combustion engine supercharging technology: it is to use a special compressor to pre-compress the gas before entering the cylinder, increase the density of the gas entering the cylinder, and reduce the volume of the gas. In this way, the quality of the gas per unit volume is greatly increased. The gas volume can meet the combustion needs of fuel, so as to achieve the purpose of increasing engine power. Supercharging (including supercharging and intercooling, two-stage supercharging, sequential supercharging and other supercharging systems, the same below) technology can improve the power performance, fuel economy and emission of internal combustion engines. The supercharging method of the engine can be basically divided into three categories according to the different energy sources used to drive the su...

Claims

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Application Information

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IPC IPC(8): F02D9/02F02M35/10F02B37/04F02B37/007F02B37/12F02B29/04F02D9/08F01N13/08
CPCY02T10/146Y02T10/121Y02T10/144Y02T10/14Y02T10/12
Inventor 谢国华
Owner 谢国华
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