Method and system for engine torque estimation
An engine torque and engine technology, applied in torque measurement, power measurement, instruments, etc., can solve the problems of huge calculation amount and increase the complexity of engine torque estimation, and achieve the effect of reducing calculation complexity and simple calculation.
Active Publication Date: 2019-03-05
常州易控汽车电子股份有限公司
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[0003] The existing optimization of engine torque mainly includes estimating the engine torque by deriving the engine torque inversely from the generator torque, or estimating the engine torque by using a linear observer, a nonlinear observer, or a neural network observer. ; However, these methods either rely on accurate models or require a huge amount of calculation, thus increasing the complexity of engine torque estimation
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[0014] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present application as recited in the appended claims.
[0015] The terminology used in this application is for the purpose of describing particular embodiments only, and is not intended to limit the application. As used in this application and the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term...
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The invention provides a method and system for estimating an engine torque. The system comprises a processor, a cylinder pressure sensor, a rotating speed sensor, and a controller, wherein the cylinder pressure sensor and the rotating speed sensor are connected with the processor, and the controller is connected with the processor via a SPI (serial peripheral interface) bus. The cylinder pressure sensor is used for acquiring the cylinder pressure information of an engine and sending the cylinder pressure information to the processor. The rotating speed sensor is used for acquiring the rotating speed information of a signal disc installed on a crankshaft and sending the rotating speed information to the processor. The processor is used for acquiring the cylinder pressure information and the rotating speed information of the engine and computing the estimated torque information of the engine according to the cylinder pressure information and the rotating speed information. The method and the system may decrease computation complexity of the engine torque estimation.
Description
technical field [0001] The present application relates to the field of new energy, and in particular to a method and system for estimating engine torque. Background technique [0002] Hybrid technology is a milestone in modern vehicle power systems, marking that electric drive technology has gained a place in vehicle power units. According to the components and layout structure of the power source, the hybrid power has several configurations such as parallel type, series type and hybrid type. For parallel hybrid power, both the engine and the motor can drive the vehicle. In this configuration, the speed of the two power units is the same speed, which is directly related to the speed of the vehicle. Therefore, it is necessary to increase the freedom of torque in its optimization. Spend. In the series hybrid configuration, the power system is called APU (Auxiliary Power Unit, auxiliary power unit). Generally, the power battery is used for energy storage, and the vehicle is d...
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IPC IPC(8): G01L3/00
CPCG01L3/00
Inventor 孙进伟张科勋郝守刚周天元王金力杜嘉恩
Owner 常州易控汽车电子股份有限公司