4 pin 4410801 4410811 4510820 Racing Cable Wiring Harness Car Electrical Automotive Auto Wire Connectors 3.5 Series

Schematic diagram of through structural beams

2.3.3.2 Derivation Strategy of Underbody System

The following is an example of the through-beam structure to illustrate the derivation strategy of the vehicle body under the platform. The derivation strategy of the vehicle body system under the platform is based on the derivation of the vehicle grid matching the platform planning model. Its core technical strategy is to solidify the main beam structure, and realize the adjustment of the platform planning model to the vehicle length, vehicle width, etc. through the adjustment of local parts. Requirements for grid size changes.

First, according to the minimum front suspension requirements and the minimum crash box size in the platform planning model, analyze and determine the front end size of the main beam, and solidify the boundary of the front end of the main beam. Secondly, according to the maximum Y-direction dimension of the power combination layout envelope in the compatible platform planning, solidify the inner boundary dimension of the engine compartment at the front end of the main beam. Finally, through the tire envelope and minimum wheelbase analysis of the platform planning model, the outer boundary size of the engine compartment at the front end of the main beam is solidified.

After solidifying the structural dimensions of the main body beam, the vehicle length evolution of the vehicle body system and platform planning is mainly reflected in the evolution of the front suspension, wheelbase, and rear suspension. The evolution strategy of the front suspension is mainly through the length of the crash box. The change adapts to the design requirements of the length of the front suspension of different models; the wheelbase evolution strategy mainly adapts to the design requirements of the wheelbase length of different models through the length change of the front and rear floor connectors; the rear suspension evolution strategy mainly adapts to the rear suspension of different models through the length change of the rear floor. The length design requirements of the suspension are shown in Figure 2-18.

Schematic diagram of the evolution strategy of the vehicle commander

Secondly, the derivation of the underbody system and the platform planning vehicle width evolution are mainly reflected in the evolution of the front, middle and rear of the underbody. The front part of the lower body mainly adapts to the design requirements of the wheelbase of different models through the change of the front hub package, matching the front wheelbase evolution strategy. The middle part of the lower body adapts to the vehicle width design requirements of different models through the change of the Y direction of the front floor sill. The rear part of the lower body adapts to the design requirements of the rear track of different models through the width between the left and right rear floor rear longitudinal beams.

2.3.4 System Solution Selection and Product Derivation Strategy for Electronic Appliance Architecture

With the development of automobiles in the fields of electrification, intelligence, networking, safety, and environmental protection, the number of ECUs on them is increasing, the wiring is becoming more and more complicated, the wiring harness is becoming larger and larger, the failure rate is increasing, and troubleshooting is difficult. , maintenance is inconvenient, and some data information cannot be shared and interacted. In order to improve resource utilization and work reliability, simplify lines, increase the speed and reliability of information transmission, and reduce failure rates, vehicle network technologies, such as Local Interconnect Network (LIN) bus, Controller Area Network (Controller Area Network) Network, CAN) bus, FlexRay, MOST bus, CAN FD (CAN with Flexible Data Rate) and Ethernet (Ethernet) emerged at the historic moment, which solved the wiring harness connection problem between controllers, and can carry out information transmission between controllers , Share, reduce the number of repetitions of sensor and controller signals, improve the flexibility of the system, and realize the change of system functions through the system software.

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