Speed regulation method of turbocharger
A turbocharger and rotational speed technology, applied in gas turbine engine testing, machine/engine, jet engine testing, etc., can solve problems such as overspeed risk, complex driving conditions, turbocharger overspeed, etc., to reduce overspeed errors The effect of judging probability, ensuring efficient operation, and avoiding overspeed phenomenon
Active Publication Date: 2022-06-21
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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Problems solved by technology
[0007] According to the above scheme, due to the complex actual driving conditions of the vehicle, it is easy to cause differences between the actual speed of the turbocharger and the estimated speed due to changes in boundary conditions, resulting in the risk of overspeeding of the turbocharger, and because the turbocharger is used The exhaust energy of the engine after combustion does work to drive the turbine to rotate at a high speed to compress the fresh air. Therefore, the engine exhaust is the direct energy source for the turbocharger to work, and the boost pressure is the performance result of the turbocharger. Through the results, it can be deduced The potential manifestation of the turbocharger is also uncertain
[0008] In summary, using the above scheme to estimate the turbocharger speed has a large uncertainty and deviation, that is, there is a difference between the estimated model and the actual turbocharger speed, which will also bring the risk of overspeed
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[0033] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0034] The present invention proposes an embodiment of a turbocharger speed regulation method, specifically, as figure 1 As shown, can include:
[0035] Step S1, collecting pressure and temperature data in front of the vortex through the pressure and temperature sensor arranged at the turbine inlet of the turbocharger in real time;
[0036] Step S2, calculating the current exhaust energy of the engine according to the pre-vortex pressure and temperature data;
[0037] Step S3, according to the exhaust energy of the engine an...
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The invention discloses a method for regulating the speed of a turbocharger. The main design concept is that the pressure and temperature sensors arranged at the inlet and outlet of the volute of the turbocharger can monitor the output energy of the exhaust gas of the engine, which is used to drive the turbocharger. Combined with the pre-calibrated turbocharger speed relationship based on different exhaust energy, the turbocharger speed under the current exhaust output energy is estimated, and then compared with the preset speed limit to achieve For the regulation of the speed of the turbocharger, the core idea of the present invention is to positively judge the working state of the turbocharger by the exhaust condition, and do the opposite to the existing technology, effectively avoiding the reverse guessing of the effect after supercharging The disadvantage of the turbocharger speed greatly reduces the probability of misjudgment of the turbocharger overspeed, so that the high-efficiency operation of the turbocharger can be ensured while avoiding the overspeed phenomenon of the turbocharger.
Description
technical field [0001] The invention relates to the field of engine control, in particular to a method for regulating the rotational speed of a turbocharger. Background technique [0002] With the increasingly stringent national fuel consumption regulations, the use of engine boosting technology has become the development direction of various automobile manufacturers. Turbocharging uses the exhaust energy after engine combustion to do work to drive the turbine to rotate at high speed to compress fresh air, so as to increase the intake air volume and improve engine power. The turbocharger is a high-speed rotating component (the maximum speed of the impeller can reach 250,000 revolutions), and it works in a condition where the working conditions change rapidly. The turbocharger will overspeed when it is working (the speed of the turbocharger exceeds the Material maximum speed requirements), resulting in turbocharger failure. Therefore, generally, related parts and sensors ar...
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IPC IPC(8): F02B37/18G01M15/14
CPCF02B37/183G01M15/14Y02T10/12
Inventor 马勇赵真真王右
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD