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Adjustable two-stage supercharging sequential system applied to V-shaped diesel engine

A two-stage supercharging and diesel engine technology, which is applied to mechanical equipment, combustion engines, machines/engines, etc., can solve problems such as inability to adjust, limited adjustment range, and limited boost ratio

Inactive Publication Date: 2013-02-27
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the exhaust gas discharge supercharging system, the variable geometry turbocharging system, and the sequential supercharging system can provide a limited boost ratio, and the adjustment range for different engine speed and load conditions is also limited. The adjustable two-stage supercharging system Although it can provide a large boost ratio, it is poorly adaptable to the two-row exhaust of the V-shaped diesel engine and the working conditions of different speeds and loads
In the existing technology, the patent number is ZL200410050996.3, which is an invention patent of a variable modular pulse conversion supercharging device for a turbocharged diesel engine. It provides a supercharging device with a continuously variable exhaust pipe volume. However, it cannot be individually adjusted according to the scavenging and exhaust temperature of each cylinder.

Method used

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  • Adjustable two-stage supercharging sequential system applied to V-shaped diesel engine

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Embodiment Construction

[0014] The embodiments of the present invention are described in detail below. Based on the premise of the technical solution of the present invention, the present embodiment provides detailed implementation and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0015] like figure 1 As shown, this embodiment provides an adjustable two-stage supercharging sequence system applied to a V-type diesel engine, including an exhaust branch pipe 1, an exhaust main pipe 2, an intake branch pipe 3, an intake main pipe 4, an intercooler 5, High-pressure turbocharger 6, low-pressure turbocharger 7, turbine control unit, compressor control unit, intake control unit, exhaust control unit, the inlet of the exhaust branch pipe is connected to the exhaust port of the cylinder head 8, The outlet of the exhaust branch pipe 1 is connected to the exhaust manifold 2, and the high-pressure stage turbocharger 6 is connected in s...

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Abstract

The invention discloses an adjustable two-stage supercharging sequential system applied to a V-shaped diesel engine, wherein the system comprises an exhaust branch pipe, an exhaust general pipe, an air intake branch pipe, an air intake general pipe, an intercooler, a high-pressure-stage turbocharger, a low-pressure-stage turbocharger, a turbine control unit, a gas compressor control unit, an air intake control unit and an exhaust control unit. Through controlling the starting of an exhaust switch valve and an air intake switch valve and the close of a turbine switch valve and a gas compressor switch valve, the changing of the exhaust mode of the V-shaped diesel engine from two rows to one row and the sequential switch of the adjustable two-stage supercharging system are realized, thus the low-rotation-speed working condition performance of the diesel engine is improved; and through controlling the closing of the exhaust switch valve and the air intake switch valve in a high-rotation-speed working condition and the starting of the turbine switch valve and the gas compressor switch valve, the exhaust is changed from one row to two rows, and the state of the exhaust pipe with high or low rotation speed load is regulated in target. According to the invention, better performances of the engine can be obtained within the whole load operation range.

Description

technical field [0001] The invention relates to a turbocharging system of an internal combustion engine, in particular to an adjustable two The invention relates to sequential switching of a stage supercharging system, belonging to the technical field of internal combustion engines. Background technique [0002] With the development of society and the improvement of environmental protection requirements, engine boosting technology is now more and more widely used. Most of the medium and high-power engines use turbocharging technology to increase power and reduce fuel consumption. The turbocharging system includes exhaust gas discharge supercharging system, variable geometry section turbocharging system, sequential supercharging system and adjustable two-stage supercharging system. Exhaust gas bleed supercharging system bleeds off part of the exhaust gas in front of the turbine, generally about 10% of the total exhaust gas volume, and effectively prevents the supercharger fr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B37/013F02B37/12
CPCY02T10/144Y02T10/12
Inventor 李华雷邓康耀石磊崔毅
Owner SHANGHAI JIAO TONG UNIV
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