Control method, system and vehicle of electronic supercharger
A technology of electronic supercharger and control method, applied in electrical control, engine control, fuel injection control, etc., can solve problems such as insufficient exhaust gas energy, influence on acceleration performance, and acceleration hysteresis, so as to avoid acceleration hysteresis, improve acceleration performance, The effect of enhancing the driving experience
Active Publication Date: 2019-12-06
GREAT WALL MOTOR CO LTD
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Problems solved by technology
But this requires a process, for example: when the vehicle is accelerating rapidly, the exhaust energy of the engine in the initial stage of rapid acceleration is not enough in several working cycles to effectively drive the turbocharger to reach the expected speed, resulting in acceleration hysteresis, affecting Acceleration performance
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[0032] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0033] The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0034] figure 2 is a flow chart of a control method for an electronic supercharger according to an embodiment of the present invention.
[0035] Before describing the control method of the electronic supercharger according to the embodiment of the present invention, the engine system is first described, as figure 1 As shown, the engine system includes an electronic supercharger 1, a turbocharger 2 and an engine 3, wherein the exhaust part of the engine 3 is connected with the turbocharger 2, and the electronic supercharger 1 is connected with the intake part of the engine 3 , In addition, the electronic supercharger 1 is connected in series with the turbocharger 2 . The electronic su...
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The invention provides a control method and system of an electronic supercharger, and a vehicle. The method comprises the following steps of: when the start-up conditions of the electronic supercharger are met, determining the required torque of an engine according to the opening degree of an accelerator pedal and the rotating speed of the engine; obtaining required air intake quantity of the engine according to the required torque; obtaining required air intake pressure according to the required air intake quantity and air intake temperature; calculating air intake pressure difference between the required air intake pressure and actual air intake pressure; obtaining the estimated rotating speed of the electronic supercharger according to the air intake pressure difference and the rotating speed of the engine; performing PID control according to the air intake pressure difference to obtain PID regulated rotating speed; and correcting the estimated rotating speed of the electronic supercharger according to the PID regulated rotating speed to obtain the final output rotating speed of the electronic supercharger. Through the adoption of the method disclosed by the invention, the acceleration property of the vehicle can be effectively improved, and further driving experience is enhanced.
Description
technical field [0001] The invention relates to the technical field of automobiles, in particular to a control method, system and vehicle of an electronic supercharger. Background technique [0002] At present, the engine of the vehicle is supercharged by means of a turbocharger, which can improve the acceleration performance of the vehicle to a certain extent. However, when the vehicle is accelerating, the turbocharger needs to use the high-temperature and high-pressure exhaust gas from the engine to drive the turbocharger. Turbo, which in turn supercharges the engine. But this requires a process, for example: when the vehicle is accelerating rapidly, the exhaust energy of the engine in the initial stage of rapid acceleration is not enough in several working cycles to effectively drive the turbocharger to reach the expected speed, resulting in acceleration hysteresis, affecting Accelerate performance. Contents of the invention [0003] In view of this, the present inven...
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IPC IPC(8): F02D23/00F02D41/00F02B39/16
CPCF02B39/16F02B2039/162Y02T10/12
Inventor 崔亚彬赵伟博袁中营
Owner GREAT WALL MOTOR CO LTD