Supercharger overspeed protection control method, supercharger, engine and vehicle
A control method and overspeed protection technology, which is applied in the field of vehicles, can solve problems such as failure to meet customer requirements and large engine power loss, and achieve the effect of reducing power loss and reliable operation
Active Publication Date: 2022-04-19
WEICHAI POWER CO LTD
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Problems solved by technology
However, this will cause a large power loss of the engine in the plateau area, which cannot meet the customer's requirements
Method used
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[0029] 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 and are intended to explain the present invention and should not be construed as limiting the present invention.
[0030] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a s...
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The invention discloses a supercharger overspeed protection control method, a supercharger, an engine and a vehicle, and relates to the technical field of vehicles. The control method for overspeed protection of the supercharger comprises the following steps that the rotating speed of the supercharger is monitored; when the rotating speed of the supercharger is equal to the long-time allowable rotating speed and the accumulated running time length under the working condition of the long-time allowable rotating speed exceeds the set time length, a deflation valve of the supercharger is controlled to deflate; and when the rotating speed of the supercharger is larger than the long-time allowable rotating speed and smaller than the short-time allowable rotating speed, and the opening degree of the deflation valve reaches the maximum, the oil injection quantity of the engine is reduced. According to the control method for overspeed protection of the supercharger, the rotating speed of the supercharger is subjected to hierarchical control, and different rotating speed reducing modes are adopted in different stages, so that the power loss of the supercharger in a plateau area can be reduced as much as possible while reliable operation of the supercharger is ensured.
Description
technical field [0001] The invention relates to the technical field of vehicles, in particular to a supercharger overspeed protection control method, a supercharger, an engine and a vehicle. Background technique [0002] A supercharger consists of a turbine and a compressor. In the entire power system, the intake port of the turbine is connected to the exhaust manifold of the engine, and the exhaust port of the turbine is connected to the exhaust pipe; the intake port of the compressor is connected to the air filter, and the exhaust port is connected to the exhaust pipe. on the intake manifold. Inside the supercharger, the impeller of the turbine is rigidly connected to the impeller of the compressor through the supercharger shaft, which is called the supercharger rotor. The supercharger rotor is fixed in the supercharger by floating bearings. [0003] The working principle of the supercharger is: when the engine is working, the high-temperature and high-pressure exhaust ...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F02B37/16F02D41/00F02D41/30F02D23/00
CPCF02B37/16F02D41/0007F02D41/30F02B2037/122Y02T10/12
Inventor 陈月春任杰王晓军刘刚李素婷
Owner WEICHAI POWER CO LTD