Fuel injection control method, device, system and vehicle
A control method and fuel injection volume technology, which is applied in fuel injection control, electrical control, engine control, etc., can solve problems such as inaccurate measurement of intake air volume and inability to accurately control fuel injection volume, and achieve reduction of exhaust emissions and emission reductions. Air temperature, the effect of improving control accuracy
Active Publication Date: 2020-09-18
BORGWARD AUTOMOTIVE CHINA CO LTD
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[0004] The purpose of this disclosure is to provide a fuel injection control method, device, system and vehicle for the problem in the prior art that the fuel injection volume cannot be accurately controlled due to the inaccurate measurement of the actual intake air volume in the cylinder.
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[0027] Specific embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.
[0028] figure 1 It is a flow chart of a fuel injection control method shown according to an exemplary embodiment. Such as figure 1 As shown, the method may include:
[0029] In step 101, the air intake flow rate and the engine speed of the engine are acquired.
[0030] In step 102, the exhaust gas flow of the engine is obtained.
[0031] In the present disclosure, an intake air flow meter may be arranged at the intake port of the intake pipe of the engine for detecting the intake air flow of the engine. The engine speed can be detected by an engine speed sensor. An oxygen concentration sensor can be arranged in the exhaust pipeline of the engine to dete...
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The invention relates to an oil injection control method, device and system and a vehicle. The control method comprises the steps of acquiring the air intake flow and the rotational speed of an engine; acquiring the exhaust flow of the engine; determining the air intake capacity of an air cylinder of the engine at least according to the air intake flow and the exhaust flow; acquiring detected data of an oxygen concentration sensor arranged in a gas exhaust pipe of the engine; determining the target oil injection quantity according to the air intake flow, the detected data and the rotational speed of the engine; and controlling an oil spray nozzle to execute oil injection operation according to the target oil injection quantity. Thus, the air intake quantity of the air cylinder of the engine can be obtained accurately, so that the oil injection quantity of the engine is controlled accurately, the control precision is improved, the exhaust gas temperature is lowered, and exhaust gas emission is reduced.
Description
technical field [0001] The present disclosure relates to the field of fuel injection control, in particular, to a fuel injection control method, device, system and vehicle. Background technique [0002] In order to optimize the intake of gasoline engine, a continuously variable intake and exhaust valve timing (VTT) system is adopted, and different VTT control strategies are adopted under different engine operating conditions. For example, in the vehicle start-up, low-speed and high-load operating conditions, in order to provide sufficient power, the valve overlap angle will be increased, the intake flow and exhaust flow will be increased, and the temperature in the cylinder will be reduced, thereby improving the power of the engine. [0003] The existing gasoline engine fuel injection control method first detects the intake air quantity of the engine, determines the required fuel injection quantity according to the theoretical air-fuel ratio, and then performs closed-loop co...
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IPC IPC(8): F02D41/30F02D41/18
CPCF02D41/1445F02D41/1454F02D41/18F02D41/30F02D2200/101
Inventor 李泽峰
Owner BORGWARD AUTOMOTIVE CHINA CO LTD