Cold start method, device and equipment of motor vehicle, and storage medium thereof

Abstract

The invention relates to the field of motor vehicles, and discloses a cold start method, device and equipment of a motor vehicle, and a storage medium thereof. The cold start method of the motor vehicle comprises the steps of executing the following operation to at least one cylinder in an internal combustion engine of the motor vehicle repeatedly till the preset conditions are met if determiningthat the motor vehicle is subjected to cold start; compressing gas in the cylinder through a piston of the cylinder via control over an intake valve and an exhaust valve of the cylinder and a coolingsystem of the internal combustion engine, so that the gas temperature is increased; enabling the intake valve to be in the open state and accordingly enabling the heated gas to enter an air inlet waythrough the intake valve if the piston reaches the position with the first preset distance from the top dead center in the uplink process; and controlling the internal combustion engine to perform fuel injection ignition operation. According to the cold start method, through control over the cooling system and intake and exhaust systems, heating of parts and components of a combustion system is achieved, so that fuel evaporation is promoted effectively, and hydrocarbon emissions in the cold start process are reduced.

Description

technical field [0001] The invention relates to the field of motor vehicles, in particular to a cold start method, device, equipment and storage medium of a motor vehicle. Background technique [0002] Against the backdrop of increasingly serious environmental pollution and increasingly stringent emission regulations, motor vehicle manufacturers will adopt various technical means to reduce the emission of harmful emissions from internal combustion engines. Among them, the control of cold start hydrocarbon emissions is a very important technical goal, especially in low temperature environments. [0003] In the existing internal combustion engine control technology, the spray quality is generally improved by continuously adopting injectors with better atomization characteristics (mostly injectors with more oil holes) to reduce low-temperature cold-start hydrocarbon emissions in order to cope with more stringent emission regulations. [0004] Or reduce hydrocarbon emissions b...

AI Technical Summary

Problems solved by technology

However, on the one hand, this method increases a number of additional parts and increases the volume and weight of the internal combustion engine. On the other hand, for internal combustion engines that use fuel oil as the only fuel, it is necessary to increase gas storage, transmission and control systems. Poor feasibility in internal combustion engines

[0005] It can be seen that the existing methods for improving the cold start of the internal combustion engine need to add a large number of external parts, or increase the size and weight of the internal combustion engine, or consume additional electricity or gas, or reduce the service life and reliability of the internal combustion engine

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