Control system and control method for turbocharger
A turbocharger and control system technology, applied in the direction of machines/engines, engine components, internal combustion piston engines, etc., can solve problems such as difficult boost pressure and lack of electronic control units
Inactive Publication Date: 2013-05-08
SAIC MOTOR
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Problems solved by technology
[0006] The above-mentioned control method controlled by the engine electronic control unit is not applicable in some applications, such as the test stage; turbocharged engines in the initial and test stages often do not have a well-matched electronic control unit, and it is difficult to accurately and Steady control of boost pressure
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[0029] Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following descriptions are illustrative and exemplary only.
[0030] figure 1 A schematic diagram of the first part of the turbocharger control system according to the invention, namely the pressure control mechanism, is shown. It can be seen from the figure that the pressure control mechanism includes a compressed medium source 1 , a shut-off valve 2 , a pilot pressure relief valve 4 , a first pressure regulating valve 6 and a second pressure regulating valve 7 arranged in the control pipeline.
[0031] The compressed medium source 1 uses fluid as the working medium, and uses the static pressure of the fluid to provide power for the pressure control mechanism. It is not only convenient to design and manufacture, but also has a long service life and is easy to operate and control. In a specific embodiment, the compressed medium can be select...
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The invention relates to a control system and a control method for a turbocharger. A pressure control mechanism is used for controlling an exhaust gas valve of the turbocharger. The pressure control mechanism comprises a compression medium source, a shut-off valve, a pilot decompression valve, a first pressure regulating valve and a second pressure regulating valve which are arranged in a control pipeline. The shut-off valve is arranged at an outlet of the compression medium source for opening and shutting off the output of the compression medium source; the pilot decompression valve and the first pressure regulating valve are arranged on the lower course of the shut-off valve successively, the pilot decompression valve is provided with a first pressure gage and reduces pressure when pressure of compression media is too high, and the first pressure regulating valve is provided with a second pressure gage; and the second pressure gage is communicated with a lower course pipeline of the first pressure gage and the external environment, and the lower course of a control pipeline is connected with a mechanical actuator of the exhaust gas valve. The control system and the control method are applicable to development tests of turbochargers, and the boost pressure of a motor can be controlled easily, accurately and stably; and the design is ingenious, and the manufacture cost is low.
Description
【Technical field】 [0001] Generally speaking, the present invention relates to the control of the test stage of the automobile internal combustion engine; specifically, the present invention relates to a turbocharger control system and its control method suitable for the test stage of the automobile internal combustion engine. 【Background technique】 [0002] In recent years, with the development of China's auto industry, there are more and more cars with turbocharged engines, including domestic cars, especially mid-level cars. [0003] As we all know, the engine generates power by burning fuel in the cylinder. Since the amount of fuel input is limited by the amount of air sucked into the cylinder, the power generated by the engine will also be limited. If the engine is already running at its best, increasing output power can only be achieved by compressing more air into the cylinders to increase the amount of fuel, thereby improving combustion performance. Therefore, under t...
Claims
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Login to View More IPC IPC(8): F01D17/10F02B37/12
CPCY02T10/144Y02T10/12
Inventor 唐绪华张弘陈伟芳
Owner SAIC MOTOR