Engine supercharge control method and device

A boost control and engine technology, applied in the direction of engine control, combustion engine, machine/engine, etc., can solve the problems of poor acceleration performance of the whole vehicle, etc., to reduce fuel consumption, increase low-end torque, improve dynamic response time and The effect of speeding up performance

Active Publication Date: 2015-11-11
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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Problems solved by technology

Due to the lack of low-end torque, this directly leads to insufficient engine torque during the period from the moment the engine is just started to when ...

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  • Engine supercharge control method and device
  • Engine supercharge control method and device
  • Engine supercharge control method and device

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Embodiment Construction

[0048] In order to enable those skilled in the art to further understand the features and technical contents of the present invention, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings and implementation methods.

[0049] Aiming at problems such as insufficient low-end torque of the engine caused by the hysteresis phenomenon of the current turbocharger, and poor start-up and acceleration performance of the whole vehicle, the embodiment of the present invention provides an engine boost control method and device, which can effectively solve the problem of supercharging and miniaturization of the engine. Due to the hysteresis of the turbocharger, the low-end torque of the engine is insufficient and the dynamic response is poor.

[0050] Figure 5 It is a flow chart of the engine boost control method in the embodiment of the present invention, including the following steps:

[0051] Step 101: Collect the engin...

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Abstract

The invention discloses an engine supercharge control method and a device. The method comprises the steps of: (1) acquiring the rotating speed and the torque of an engine in real time; (2) judging if the rotating speed of the engine is in a first rotating speed range; (3) if so, acquiring a pressure value P1 in an outlet of an air filter and a pressure value P3 in an outlet of a turbocharger; (4) judging if the P3 is equal to n*P1; (5) if not, calculating the actual pressure change rate in the outlet of the turbocharger in the unit time; and (6) obtaining a calibrated pressure value P in the outlet of the turbocharger and calculating a theoretical pressure change rate according to the rotating speed signal and the torque of the engine if the actual pressure change rate is unequal to 0; and opening an electronic supercharger if the pressure value P3 in the outlet of the turbocharger is lower than the calibrated pressure value P and the actual pressure change rate is lower than the theoretical pressure change rate. The method effectively enhances the dynamic response time and the acceleration performance of whole vehicle.

Description

technical field [0001] The invention relates to the technical field of engine boosting, in particular to an engine boosting control method and device. Background technique [0002] The engine air intake system plays a key role in engine performance. The engine air intake system provides sufficient fresh air for the engine to meet the needs of engine combustion, so that the engine can perform better. As China's fuel consumption regulations become more and more stringent, in order to meet China's fourth-stage fuel consumption requirements, engine supercharging and miniaturization has become a trend (using supercharged small-displacement engines instead of the original large-displacement natural intake engine), that is, by reducing the engine displacement to achieve the purpose of reducing fuel consumption. [0003] The small-displacement engine achieves the dynamic performance of a large-displacement naturally aspirated engine through the use of turbocharging technology. Tu...

Claims

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Application Information

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IPC IPC(8): F02D23/00
CPCY02T10/12
Inventor 陈友祥杨林强张应兵刘俊欧阳彩云朱浩杰张亚洲王英杰穆芳影惠昭晨叶志伟王友成张超
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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