Distributed active air inlet grille for commercial vehicle

Abstract

The utility model discloses a commercial vehicle distributed active air inlet grille which comprises a base, a plurality of sets of sub-grilles are distributed on the air inlet end face of the base and used for cooling an automobile air conditioner system, an engine heat management system and a transmission heat management system respectively, and the multiple sets of sub-grilles achieve cooperative movement or independent movement through a control system. Compared with the prior art, a whole grille with a larger area is divided into a plurality of sub-grilles with smaller areas, and a plurality of AGS actuators are used for respectively controlling the corresponding sub-grilles, so that the load of a single actuator is reduced, the normal work of the AGS system of the commercial vehicle is ensured, and meanwhile, the energy consumption of the AGS system is reduced. The danger to the commercial vehicle caused by the fault of a single AGS actuator is also greatly reduced; in addition, the distributed AGS sub-grids can be independently controlled, can move independently and can also move in a coordinated mode, and the distributed AGS sub-grids are more flexible when applied to the AGS.

Description

Technical Field

[0001] The utility model belongs to the field of commercial vehicle air intake grilles, in particular to a distributed active air intake grille for commercial vehicles. Background Art

[0002] Active Grille Shutter (AGS) technology, which offers significant fuel savings at a low cost, was first adopted on high-end passenger vehicles in Europe and the United States. It later gained attention and application from domestic OEMs. AGS has now become a mature technology in passenger cars and is now being introduced into commercial vehicles.

[0003] Passenger vehicle AGS systems are relatively small, so a single actuator paired with a single grille can meet operational requirements. Reference technology: Publication No. CN216833207U discloses an automotive active air intake grille assembly. However, commercial vehicles have a larger air intake area and operate in harsher driving conditions. A single actuator alone may not be able to move all the grille blades. Under these conditions, the AGS actuator can easily burn out due to extreme load. In extreme cases, this can damage the vehicle's thermal management system, posing a serious risk to the vehicle. Summary of the Invention

[0004] The utility model proposes a distributed active air intake grille for commercial vehicles, which effectively reduces the load of the original single actuator and greatly reduces the risk to commercial vehicles caused by failure of a single actuator.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a distributed active air intake grille for commercial vehicles, including a base, which is characterized in that: a plurality of windows are distributed on the air inlet end surface of the base, each window is provided with a sub-grille, and the multiple sets of sub-grilles are respectively used to dissipate heat for the automobile air-conditioning system, the engine thermal management system and the transmission thermal management system, and the multiple sets of sub-grilles can realize coordinated movement or independent movement through a control system.

[0006] The above technical solution is further limited in that the condenser in the automobile air-conditioning system dissipates heat through the corresponding sub-grille.

[0007] The above technical solution is further limited in that the cooling water tank in the engine thermal management system dissipates heat through the corresponding sub-grid.

[0008] The above technical solution is further limited in that the transmission oil cooler in the transmission thermal management system dissipates heat through the corresponding sub-grid.

[0009] The above technical solution is further limited in that the control system is mainly composed of sensors, an OBD vehicle automatic diagnostic system and a BCM body control module.

[0010] The above technical solution is further improved in that an air-conditioning air-inlet pressure regulator is provided on the air-inlet end face of the base, and the air-conditioning air-inlet pressure regulator can realize independent movement or coordinated movement with the sub-grill through a control system.

[0011] Beneficial effects: Compared with the existing technology, the utility model divides a whole grille with a larger area into multiple sub-grilles with smaller areas, and uses multiple AGS actuators to control the corresponding sub-grilles respectively, so as to reduce the load of a single actuator and ensure the normal operation of the AGS system of commercial vehicles. At the same time, it also greatly reduces the danger to commercial vehicles caused by the failure of a single AGS actuator; in addition, the utility model can realize independent control of distributed AGS sub-grilles, which can move individually or in a coordinated manner, and is more flexible in AGS applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is the structural diagram of the distributed air intake grille of a commercial vehicle.

[0013] Figure 2 This is the communication architecture diagram of the distributed air intake grille of a commercial vehicle.

[0014] Figure 3 This is a control flow chart of the distributed active air intake grille of a commercial vehicle. DETAILED DESCRIPTION

[0015] like Figure 1 As shown, the distributed active air intake grille for a commercial vehicle includes a base 1. Windows of various sizes are distributed on the air inlet end surface of the base. Each window is provided with a sub-grille, totaling three sets of sub-grilles. The first set of sub-grilles 2 is used to dissipate heat from the condenser in the vehicle's air conditioning system. The second set of sub-grilles 3 is used to dissipate heat from the cooling water tank in the engine thermal management system. The third set of sub-grilles 4 is used to dissipate heat from the transmission oil cooler in the transmission thermal management system. An air conditioning inlet pressure regulator 5 is provided on the air inlet end surface of the base. The air conditioning inlet pressure regulator is used to improve the air inlet pressure of the air conditioning system, avoid damage to the air compressor, and help extend its service life.

[0016] The first set of grilles, the second set of grilles, the third set of grilles and the air-conditioning inlet pressure regulator have the same structure as the automobile active air intake grille; the automobile active air intake grille includes a grille mechanical structure body and an actuator; the actuator includes an MCU and a motor, wherein the MCU includes a communication module, a control module and a drive module; the reference technology of the automobile active air intake grille is: Announcement No. CN216833207U discloses an automobile active air intake grille assembly, and the grille disclosed in the technology is the grille blade.

[0017] The first set of grilles, the second set of grilles, the third set of grilles and the air-conditioning inlet pressure regulator are controlled to achieve coordinated or independent movement through a control system; the control system is mainly composed of sensors, an OBD vehicle automatic diagnostic system and a BCM body control module;

[0018] The sensors are divided into temperature sensors and pressure sensors; the temperature sensors are all provided on the condenser, cooling water tank and transmission oil cooler, and the pressure sensor is provided at the air inlet of the automobile air conditioning system.

[0019] like Figure 2 The communication architecture of a distributed active air intake grille on a commercial vehicle is shown in Figure 6. The BCM sends a set of AGS (Automated Gear System) angle signal request messages via bus 6. The grille actuator MCUs for the first sub-grill 2, second sub-grill 3, third sub-grill 4, and air conditioning inlet pressure regulator 5 receive these messages and process them into angle information. The BCM then calculates and outputs corresponding PWM signals to control the motors, thereby rotating the grilles to the target angle, achieving AGS opening or closing control. In a bus communication system, each node has a unique address. To move a specific sub-grill, only one angle control message corresponding to the node address is sent. To coordinate the movement of several sub-grills, a set of simultaneous angle control messages are sent, each corresponding to the node address of the corresponding sub-grill. The communication bus type used in this technology is not specifically limited and can be CAN, LIN, or other bus types, depending on the communication protocol supported by the AGS actuator MCU. Generally, the number of sub-grills in a distributed active air intake grille on a commercial vehicle is relatively small, and bus-based control is relatively efficient.

[0020] like Figure 3 As shown in FIG, a control method for a distributed active air intake grille of a commercial vehicle is as follows: various heat dissipation components on the vehicle body are preset with corresponding temperature thresholds, and real-time temperature status parameters can be detected by sensors and published on the OBD system bus; when the temperature status parameters are within the set threshold range, the BCM determines that the vehicle is in a normal working condition, and multiple sets of sub-grilles perform coordinated movement; if the temperature status parameters of a component or multiple components exceed the set threshold, the BCM determines that the corresponding components are in a dangerous working condition, and the multiple sets of sub-grilles each move independently.

Claims

1. A distributed active air intake grille for commercial vehicles, including a base, characterized by: There are multiple windows distributed on the air inlet end face of the base, and each window is equipped with a sub-grille. Multiple sets of sub-grilles are used to dissipate heat for the automobile air-conditioning system, engine thermal management system and transmission thermal management system respectively. Multiple sets of sub-grilles can achieve coordinated or independent movement through the control system.

2. The distributed active air intake grille for commercial vehicles according to claim 1, characterized in that: The condenser in the automobile air-conditioning system achieves heat dissipation through the corresponding sub-grille; the cooling water tank in the engine thermal management system achieves heat dissipation through the corresponding sub-grille; and the transmission oil cooler in the transmission thermal management system achieves heat dissipation through the corresponding sub-grille.

3. The distributed active air intake grille for commercial vehicles according to claim 1 or 2, characterized in that: The control system is mainly composed of sensors, OBD vehicle automatic diagnosis system and BCM body control module.

4. The distributed active air intake grille for commercial vehicles according to claim 3, characterized in that: An air-conditioning air-inlet pressure regulator is provided on the air-inlet end surface of the base, and the air-conditioning air-inlet pressure regulator can realize independent movement or coordinated movement with the sub-grille through a control system.

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