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Air discharging section device for booster internal combustion engine

An internal combustion engine and exhaust pipe technology, which is applied in the field of two-stroke and four-stroke internal combustion engines, can solve the problems of large supercharging ratio, high drying pressure, turbo overspeed, etc., achieve full cylinder ventilation, reduce pressure oscillation, and turbine efficiency. high effect

Inactive Publication Date: 2007-04-11
谢国华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But it also has its shortcomings: that is, as the boost pressure increases, the exhaust back pressure also increases, and the benefits in the utilization of exhaust gas energy gradually decrease, making the pulse turbocharger turbine ηT lower
Due to the low operating conditions, the transfer efficiency of exhaust energy decreases significantly with the decrease of speed and load
In addition, under low operating conditions, the overall efficiency of the turbocharged internal combustion engine supercharger is also significantly reduced
Therefore, when the working condition is low, the energy balance between the turbine and the compressor of the turbocharged internal combustion engine cannot be realized; and when the engine is in a high working condition, the exhaust energy is large, the overall efficiency of the supercharger is high, and the available energy ratio of the turbine is high. The compressor needs much more, and often there will be phenomena such as turbo overspeed, excessive boost ratio, and high maximum dry pressure.

Method used

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  • Air discharging section device for booster internal combustion engine
  • Air discharging section device for booster internal combustion engine
  • Air discharging section device for booster internal combustion engine

Examples

Experimental program
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Effect test

Embodiment 1

[0050]As shown in Fig. 2, it is a kind of supercharged internal combustion engine exhaust segmentation device, which is an eight-cylinder (corresponding cylinder number is I-VIII) four-stroke diesel engine optimized exhaust segmentation device, including a supercharger and Single-cylinder exhaust passage, the turbine 20 of the supercharger 10, the turbine 20 is provided with 3 turbine inlets and a turbine exhaust port, the exhaust port of the supercharger is connected to the smoke exhaust main pipe 30; 8 single-cylinder exhaust Air channels 1-P, 2-P, 3-P, 4-P, 5-P, 6-P, 7-P, 8-P are directly connected to the outlets of each single cylinder exhaust valve; each single cylinder exhaust There are exhaust auxiliary control valves F1, F2 and F3 that can be quickly opened and closed between the exhaust pipe and the three exhaust pipes. The three exhaust pipes G1, G2 and G3 are respectively connected to the three corresponding exhaust gas inlets of the turbine 20. connected; the openi...

Embodiment 2

[0064]Fig. 8 is another kind of turbocharging exhaust subsection device, and this exhaust subsection device is the optimized exhaust device of a six-cylinder (corresponding cylinder number I-VI) four-stroke diesel engine, including a supercharger 10 and a single cylinder Exhaust duct, the supercharger 10 turbine 20 is provided with 2 intake ports with unequal channel sections and a turbo exhaust port, the exhaust port of the supercharger is connected to the smoke exhaust pipe 30; 6 single-cylinder exhaust ports Air passages 1-P, 2-P, 3-P, 4-P, 5-P, 6-P, each single-cylinder exhaust passage is directly connected to the outlet of the single-cylinder exhaust valve; each single-cylinder exhaust passage is connected to the Two exhaust auxiliary control valves that can be quickly opened and closed are arranged between the three corresponding exhaust pipes G1, G2, and G3; The rotor 102 and the valve body 103 located outside the outer rotor 102, the inner rotor 101, the outer rotor 10...

Embodiment 3

[0070] As shown in Fig. 12, it is a four-stroke four-cylinder (corresponding to cylinder number I-IV) supercharged diesel engine exhaust segmentation device, including a supercharger 10 and 4 single-cylinder exhaust ports, and the single-cylinder exhaust ports are directly connected to the single-cylinder exhaust ports. The cylinder exhaust valve outlets are connected, the turbine 20 of the supercharger 10 is provided with a turbine inlet and a turbine exhaust port, and the exhaust port of the supercharger is connected to the smoke exhaust pipe 30; 4 single-cylinder exhaust channels 1-P, 2-P, 3-P, 4-P are directly connected to the outlets of each single-cylinder exhaust valve; each single-cylinder exhaust port is connected to the opening ends of the inner rotors of two auxiliary exhaust control valves, The exhaust auxiliary control valves corresponding to each cylinder are 1-1 to 4-1 and 1-2 to 4-2. The structures of each auxiliary control valve are the same, and the exhaust au...

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Abstract

The sectional exhaust device for supercharging internal combustion engine includes a single cylinder exhaust flue connected to the outlet of the single cylinder exhaust valve, a turbine with air inlet and air exhaust, a total fume exhaust pipe connected to the air exhaust of the turbine, at least two air exhaust pipes including at least one connected to the air inlet of the turbine and the other connected to the total fume exhaust pipe, and a fast startstop auxiliary exhaust control valve with startstop timing corresponding to that of exhaust valve. The present invention separates each single cylinder exhaust into at least two short exhaust stages, and has raised water gas energy transferring efficiency and high turbine efficiency.

Description

technical field [0001] The invention relates to a two-stroke and four-stroke internal combustion engine, in particular to an exhaust system of an exhaust gas turbocharged, supercharged and intercooled internal combustion engine. Background technique [0002] For exhaust gas turbocharged internal combustion engines (including supercharged and intercooled internal combustion engines, the same below), the utilization of exhaust gas energy is directly related to the efficiency of exhaust gas turbocharged internal combustion engines, which is also directly related to the efficiency of supercharged internal combustion engines. This is because the exhaust gas turbocharging system uses the exhaust energy of the internal combustion engine to drive the turbocharger to work. There are two basic types of exhaust gas energy utilization by the turbocharging system, namely the pulse exhaust gas turbocharging system and the constant pressure exhaust gas turbocharging system. [0003] The c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B37/12
CPCY02T10/144Y02T10/12
Inventor 谢国华
Owner 谢国华