CN-121989890-A - Vehicle and gas system control method and device thereof

CN121989890ACN 121989890 ACN121989890 ACN 121989890ACN-121989890-A

Abstract

The invention discloses a vehicle and a gas system control method and device thereof, wherein the gas system of the vehicle comprises an air compressor, a dryer, a gas storage cylinder and a gas utilization component which are sequentially connected, the gas system control method comprises the steps of obtaining the work load rate of the air compressor in a preset period after the vehicle is electrified, judging whether the work load rate is smaller than or equal to the preset load rate, if so, obtaining the unloading duration, the ambient temperature and the current air pressure in the gas storage cylinder when the air compressor is continuously in an unloading state, determining an icing triggering event of the gas system according to the unloading duration, the ambient temperature and the current air pressure, and executing corresponding protection operation according to the icing triggering event. According to the technical scheme, the working stability of the gas system can be improved, and further the running stability and safety of the vehicle are improved.

Inventors

DING ZHONGYUAN
YI GUANCHAO
SUN QINAN
CHANG KUNTANG
SONG ZHENBIN
ZHANG MENG
LI CHAO

Assignees

一汽解放青岛汽车有限公司

Dates

Publication Date: 20260508
Application Date: 20260401

Claims (10)

1. A control method of a gas system of a vehicle is characterized in that the gas system of the vehicle comprises an air compressor, a dryer, an air storage cylinder and a gas utilization component which are connected in sequence, and the control method of the gas system comprises the following steps: after the vehicle is electrified, acquiring the work load rate of the air compressor in a preset period; judging whether the work load rate is smaller than or equal to a preset load rate; If yes, acquiring unloading duration, ambient temperature and current air pressure in the air storage cylinder when the air compressor is continuously in an unloading state; And determining an icing triggering event of the gas system according to the unloading time length, the ambient temperature and the current air pressure, and executing corresponding protection operation according to the icing triggering event.
2. The gas system control method of claim 1, wherein determining an icing triggering event for the gas system based on the unloading duration, the ambient temperature, and the current gas pressure comprises: Judging whether the unloading time is longer than a first preset time and the ambient temperature is less than or equal to a first preset temperature; if yes, determining that the icing triggering event of the gas system is an anti-icing triggering event.
3. The gas system control method of claim 2, wherein performing a corresponding protection operation in accordance with the icing triggering event comprises: when the icing triggering event is the anti-icing triggering event, determining a triggering interval period of the protection operation based on a mapping relation between temperature and interval period according to the ambient temperature, and controlling the vehicle to execute the protection operation once every interval of the triggering interval period; and the protection operation is to control a regeneration blowback valve on the dryer to be opened so that the gas in the gas storage cylinder is released to the outside through the regeneration blowback valve until the gas pressure in the gas storage cylinder is smaller than or equal to a first preset pressure.
4. The gas system control method of claim 2, further comprising, after determining that the icing-triggering event of the gas system is an anti-icing-triggering event: and if the duration time of the environmental temperature which is greater than the first preset temperature is longer than the second preset duration time, determining that the icing triggering event of the gas system is switched from the icing-preventing triggering event to the icing-free event.
5. The gas system control method according to claim 2, wherein the air compressor is controlled to be in a loaded state when the gas pressure in the gas cylinder is less than or equal to the first preset pressure.
6. The gas system control method of claim 1, wherein determining an icing triggering event for the gas system based on the unloading duration, the ambient temperature, and the current gas pressure comprises: And if the ambient temperature is less than or equal to a second preset temperature and the current air pressure is less than or equal to a second preset pressure, determining that the icing-triggering event is a deicing-triggering event.
7. The gas system control method of claim 6, wherein performing a corresponding protection operation in response to the icing triggering event comprises: and when the icing triggering event is the deicing triggering event, the protection operation is to determine a regulation gear of the vehicle according to the current gear of the vehicle and a preset gear-down value and control the vehicle to run in the regulation gear.
8. The gas system control method of claim 6, wherein performing a corresponding protection operation in response to the icing triggering event comprises: When the icing triggering event is the deicing triggering event, determining a regulating gear of the vehicle according to the current gear of the vehicle and a preset gear-reducing value, controlling the vehicle to run in the regulating gear, and simultaneously controlling the current upper limit value of the air storage cylinder to be a limiting pressure value.
9. A gas system control device of a vehicle is characterized in that the gas system of the vehicle comprises an air compressor, a dryer, a gas storage cylinder and a gas utilization component which are connected in sequence, and the gas system control device comprises: The work load rate acquisition module is used for acquiring the work load rate of the air compressor in a preset period after the vehicle is electrified; the work load rate judging module is used for judging whether the work load rate is smaller than or equal to a preset load rate; The parameter acquisition module is used for acquiring unloading duration, environment temperature and current air pressure in the air storage cylinder when the work load rate is smaller than or equal to a preset load rate and the air compressor is continuously in an unloading state; And the trigger event determining protection module is used for determining an icing trigger event of the gas system according to the unloading time length, the ambient temperature and the current air pressure, and executing corresponding protection operation according to the icing trigger event.
10. A vehicle comprising the gas system control device of the vehicle according to claim 9, wherein the gas system in the vehicle comprises an air compressor, a dryer, an air receiver and a gas consuming part connected in sequence.

Description

Vehicle and gas system control method and device thereof Technical Field The present invention relates to the field of vehicle control technologies, and in particular, to a vehicle and a method and apparatus for controlling a gas system thereof. Background Currently, vehicles using air pressure as a power source, such as heavy trucks, engineering vehicles, or passenger vehicles with air bags, employing air pressure braking, are becoming more and more popular. Taking a heavy truck as an example, the heavy truck takes high-pressure gas as power to brake a vehicle, the air is compressed by an inflating pump, the pressurized air reaches a brake air chamber through a pipeline and a valve body, and a push rod of the brake air chamber extends out to push a brake adjusting arm to brake. In the related technology, as the air contains a certain amount of moisture, the air in the air is filtered by air filtration, then enters an air compressor for pressurization, the pressurized air has high pressure and high temperature, the high-pressure air is cooled by a steel pipe with the length of 4-6m, then enters a dryer for drying and filtration, and finally clean and low-temperature high-pressure air enters an air storage cylinder for vehicle braking. However, when the ambient temperature is low, the air supply pipeline of the air compressor, the steel pipe, the dryer and the air storage cylinder is easy to freeze, so that a gas system is not smooth, and the normal control of a vehicle is affected. Disclosure of Invention The invention provides a vehicle and a gas system control method and device thereof, which improve the working stability of a gas system, thereby improving the running stability and safety of the vehicle. In a first aspect, the invention provides a method for controlling a gas system of a vehicle, the gas system of the vehicle comprises an air compressor, a dryer, a gas storage cylinder and a gas utilization component which are connected in sequence, and the method comprises the following steps: after the vehicle is electrified, acquiring the work load rate of the air compressor in a preset period; judging whether the work load rate is smaller than or equal to a preset load rate; If yes, acquiring unloading duration, ambient temperature and current air pressure in the air storage cylinder when the air compressor is continuously in an unloading state; And determining an icing triggering event of the gas system according to the unloading time length, the ambient temperature and the current air pressure, and executing corresponding protection operation according to the icing triggering event. Optionally, determining an icing triggering event of the gas system according to the unloading duration, the ambient temperature and the current gas pressure includes: Judging whether the unloading time is longer than a first preset time and the ambient temperature is less than or equal to a first preset temperature; if yes, determining that the icing triggering event of the gas system is an anti-icing triggering event. Optionally, according to the icing triggering event, a corresponding protection operation is executed, including: when the icing triggering event is the anti-icing triggering event, determining a triggering interval period of the protection operation based on a mapping relation between temperature and interval period according to the ambient temperature, and controlling the vehicle to execute the protection operation once every interval of the triggering interval period; and the protection operation is to control a regeneration blowback valve on the dryer to be opened so that the gas in the gas storage cylinder is released to the outside through the regeneration blowback valve until the gas pressure in the gas storage cylinder is smaller than or equal to a first preset pressure. Optionally, after determining that the icing-triggering event of the gas system is an anti-icing-triggering event, the method further comprises: and if the duration time of the environmental temperature which is greater than the first preset temperature is longer than the second preset duration time, determining that the icing triggering event of the gas system is switched from the icing-preventing triggering event to the icing-free event. Optionally, when the pressure of the gas in the gas storage cylinder is less than or equal to the first preset pressure, the air compressor is controlled to be in a loading state. Optionally, determining an icing triggering event of the gas system according to the unloading duration, the ambient temperature and the current gas pressure includes: And if the ambient temperature is less than or equal to a second preset temperature and the current air pressure is less than or equal to a second preset pressure, determining that the icing-triggering event is a deicing-triggering event. Optionally, according to the icing triggering event, a corresponding protection operation is executed, including: and