CN-121989633-A - Diesel heating system of excavator and control method thereof

CN121989633ACN 121989633 ACN121989633 ACN 121989633ACN-121989633-A

Abstract

The invention provides a diesel-warm system of an excavator and a control method thereof, belonging to the technical field of the excavator, and comprising a diesel-warm controller, a temperature sensor and Chai Nuanji, wherein the diesel-warm controller is electrically connected with the diesel-warm machine, the diesel-warm machine is connected on a cooling water pipeline between an engine and a warm air water tank, the temperature sensor is arranged in a cab and is electrically connected with a whole vehicle controller MCU, and the diesel-warm controller is respectively connected with an engine controller ECU, a whole vehicle controller MCU and a human-machine interface HMI through a CAN bus. The invention can realize that the engine is not started to supply heat in the parking process of the excavator, thereby reducing the fuel consumption.

Inventors

LI BING
LIANG RONGZHEN
WANG ZHENGHANG
Cheng Huishuang
TU XIAODAN
MENG XIAOXING

Assignees

雷沃重工集团有限公司
潍柴(青岛)智慧重工有限公司

Dates

Publication Date: 20260508
Application Date: 20260130

Claims (10)

1. The utility model provides an excavator diesel warm system, its characterized in that includes diesel warm controller, temperature sensor and Chai Nuanji, and wherein diesel warm controller is connected with diesel warm machine electricity, diesel warm machine connects on the cooling water pipeline between engine and warm braw water tank, temperature sensor sets up in the driver's cabin to be connected with whole car controller MCU electricity, diesel warm controller passes through the CAN bus and links to each other with engine controller ECU, whole car controller MCU and human-machine interface HMI respectively.
2. The diesel heating system of the excavator according to claim 1, wherein the whole vehicle controller MCU is further electrically connected with a blower, and the blower is positioned on one side of the warm air water tank.
3. The diesel heating system of the excavator according to claim 1, wherein the whole vehicle controller MCU is further connected with a pilot pressure sensor, and the pilot pressure sensor is used for detecting a pilot pressure value in the whole vehicle hydraulic system and sending the pilot pressure value to the whole vehicle controller MCU.
4. An excavator diesel heating system as claimed in claim 1 wherein the human machine interface HMI is provided within the cab for manual control of the vehicle condition.
5. A control method of an excavator diesel heating system, using an excavator heating system as claimed in any one of claims 1 to 4, comprising the steps of: Step 1, judging the working states of the whole vehicle and a diesel heating system; step 2, selecting whether to enter a parking waiting state according to the working states of the whole vehicle and the diesel heating system; and 3, comparing the temperature of the cab with the set temperature in a parking waiting state, and controlling whether the diesel heating system is started or not.
6. The method for controlling a diesel-warm system of an excavator according to claim 5, wherein the judging of the working states of the whole vehicle and the diesel-warm system is specifically as follows: The method comprises the steps that an MCU (micro control unit) receives the actual rotation speed of an engine sent by an ECU (electronic control unit) through a CAN (controller area network) bus, receives a pilot pressure value sent by a pilot pressure sensor, and judges that the whole vehicle is in a starting non-action state when the received actual rotation speed of the engine is smaller than a threshold value and the pilot pressure value is smaller than the threshold value in a set time; the vehicle controller MCU receives the working state of the diesel heating system fed back by the diesel heating controller through the CAN bus.
7. The control method of the diesel heating system of the excavator according to claim 6, wherein the working state of the diesel heating system is divided into three types of power-on non-working, working and abnormal.
8. The method for controlling a diesel-warm system of an excavator according to claim 5, wherein the step of selecting whether to enter a parking waiting state according to the working states of the whole excavator and the diesel-warm system comprises the following steps: When the whole vehicle is in a starting non-action state and the diesel heating system is in a power-on non-working state, whether the vehicle enters a parking waiting state or not is selected through a human-machine interface HMI; When the vehicle is not in the parking waiting state, the whole vehicle maintains the original state; when the vehicle is selected to enter the parking waiting state, the human-machine interface HMI sends a stopping signal to the engine controller ECU and the vehicle controller MCU, the engine controller ECU controls the engine to stop, and the vehicle enters the parking waiting state.
9. The method for controlling a diesel-warm system of an excavator according to claim 5, wherein the comparison between the cab temperature and the set temperature in the parking waiting state is performed to control whether the diesel-warm system is turned on, specifically: in a parking waiting state, the MCU compares the acquired temperature in the cab with a set temperature; When the temperature in the cab is greater than or equal to the set temperature, the whole vehicle controller MCU does not send control signals to the diesel heating system and the blower, and the diesel heating system and the blower do not work; When the temperature in the cab is smaller than the set temperature, the whole vehicle controller MCU outputs a control signal to the diesel heating system, the diesel heating controller controls the diesel heating machine to heat cooling water, and meanwhile, the blower is started to increase the temperature in the cab.
10. The method for controlling a diesel heating system of an excavator according to claim 5, further comprising the steps of: When the vehicle starts again, the human-machine interface HMI starts a vehicle starting signal to the engine controller ECU and the vehicle controller MCU through the CAN bus, the engine controller ECU receives the signal and then controls the engine to start, and meanwhile, the vehicle controller MCU closes the diesel heating system.

Description

Diesel heating system of excavator and control method thereof Technical Field The invention belongs to the technical field of excavators, and particularly relates to a diesel heating system of an excavator and a control method thereof. Background The general working process of the excavator working on the mine is that the material is unloaded into the mine card after being excavated, the mine card is unloaded to a designated position before the mine card is filled, at the moment, the excavator waits for the mine card to return in situ, the process is different from 20min to 1h, and due to the fact that the mine is large, the environment is bad and the weather is cold, a driver can choose to start an air conditioner in a cab of the excavator to wait. The air conditioner heating of the excavator is realized by blowing heat generated by cooling water into a cab to achieve the heating effect when the engine works, so that the engine is inevitably started to ensure the heating effect, but the whole vehicle does not actually work at the moment, and the fuel oil is wasted. Disclosure of Invention Aiming at the defects or shortcomings in the prior art, the invention provides the diesel heating system of the excavator and the control method thereof, which can realize that an engine is not started to supply heat in the parking process of the excavator, thereby reducing the fuel consumption. In order to achieve the above purpose, the invention adopts the following technical scheme: In a first aspect, an embodiment of the present invention provides an excavator diesel-warm system, including a diesel-warm controller, a temperature sensor and Chai Nuanji, where the diesel-warm controller is electrically connected with the diesel-warm machine, the diesel-warm machine is connected to a cooling water pipe between an engine and a warm air water tank, the temperature sensor is disposed in a cab and is electrically connected with a whole vehicle controller MCU, and the diesel-warm controller is respectively connected with an engine controller ECU, a whole vehicle controller MCU and a human-machine interface HMI through a CAN bus. Further, the whole vehicle controller MCU is also electrically connected with a blower, and the blower is positioned at one side of the warm air water tank. Further, the whole vehicle controller MCU is also connected with a pilot pressure sensor, and the pilot pressure sensor is used for detecting a pilot pressure value in the whole vehicle hydraulic system and sending the pilot pressure value to the whole vehicle controller MCU. Further, the human-machine interface HMI is arranged in the cab and used for manually controlling the state of the whole vehicle. In a second aspect, an embodiment of the present invention provides a control method of an excavator diesel-heating system, using an excavator diesel-heating system as described above, comprising the steps of: Step 1, judging the working states of the whole vehicle and a diesel heating system; step 2, selecting whether to enter a parking waiting state according to the working states of the whole vehicle and the diesel heating system; and 3, comparing the temperature of the cab with the set temperature in a parking waiting state, and controlling whether the diesel heating system is started or not. Further, the judging of the working states of the whole vehicle and the diesel heating system specifically comprises the following steps: The method comprises the steps that an MCU (micro control unit) receives the actual rotation speed of an engine sent by an ECU (electronic control unit) through a CAN (controller area network) bus, receives a pilot pressure value sent by a pilot pressure sensor, and judges that the whole vehicle is in a starting non-action state when the received actual rotation speed of the engine is smaller than a threshold value and the pilot pressure value is smaller than the threshold value in a set time; the vehicle controller MCU receives the working state of the diesel heating system fed back by the diesel heating controller through the CAN bus. Further, the working state of the diesel heating system is divided into three types of power-on non-working, working and abnormal. Further, according to the working states of the whole vehicle and the diesel heating system, whether the vehicle enters a parking waiting state is selected, specifically: When the whole vehicle is in a starting non-action state and the diesel heating system is in a power-on non-working state, whether the vehicle enters a parking waiting state or not is selected through a human-machine interface HMI; When the vehicle is not in the parking waiting state, the whole vehicle maintains the original state; when the vehicle is selected to enter the parking waiting state, the human-machine interface HMI sends a stopping signal to the engine controller ECU and the vehicle controller MCU, the engine controller ECU controls the engine to stop, and the vehicle enters the p