For commercial vehicle safety, the braking system serves as the final line of defense. With the widespread adoption of intelligent driving features such as AEBS (Automatic Emergency Braking), APA (Automatic Parking Assist), and ACC (Adaptive Cruise Control), traditional switch-based pneumatic valves can no longer meet the demands for linear, precise, and millisecond-level braking control.
Henan Huhang Automotive Technology Group Co., Ltd. (www.hu-hang.com) specializes in the research and development of automotive active safety components, having independently developed a line-controlled proportional air valve—the core actuator for comprehensive pneumatic braking ADAS systems. Through domestic precision manufacturing, this solution addresses key challenges in intelligent braking control for commercial vehicles and is compatible with all types of pneumatic braking applications, including trucks, buses, hazardous materials transport vehicles, and specialized engineering vehicles.
1. Industry Challenges: Why Can't Traditional Gas Valves Keep Up with Intelligent Driving?
1. Traditional solenoid valves only provide on/off control, causing sudden changes in braking pressure, abrupt brake responses, and susceptibility to slippage; this often leads to brake force imbalance during automatic parking or emergency braking scenarios.
2. High response latency; slow brake engagement under hazardous conditions, resulting in increased braking distance;
3. Single-channel control lacks redundancy; if the valve body fails, the entire active safety system will fail.
4. Poor compatibility; retrofitting older pneumatic brake systems is highly challenging and involves complex installation procedures.
Addressing industry limitations, the system features self-developed linear-controlled proportional valves that enable continuous linear adjustment of brake pressure, establishing a closed-loop integration across the entire perception–controller–brake execution chain.
II. Route Protection Control Proportional Valve: Core Operating Principle
The electrically controlled proportional valve is a precision electromagnetic control valve specifically designed for commercial vehicle pneumatic braking systems, serving as the "executive hub" of the AEBS system.
The vehicle's ADAS controller sends electronic control signals; the internal electromagnetic mechanism of the valve body drives a high-precision valve core to dynamically adjust the cross-sectional area of the air passage in real time, achieving linear and precise control of brake pressure with an accuracy of ±0.5% over full scale (FS) and millisecond-level response speed. The system dynamically adjusts braking force based on vehicle speed and obstacle distance, delivering smooth, stable, and precise intelligent braking performance.
It features a dual-independent control system with a redundant dual-circuit design: if one circuit fails, the other continues to operate normally without affecting the vehicle's standard foot brake function, completely eliminating brake failure risks and meeting automotive-grade functional safety requirements.
III. Advantages of the Five Core Products
1. Rapid response for safer braking
The solenoid valve core features an optimized structure that enables signal transmission to pressure regulation within mere milliseconds. In field tests simulating APA parking scenarios or emergency braking due to sudden obstacles, it rapidly intervenes to decelerate, significantly reducing braking distance.
2. Linear pressure adjustment for enhanced driving comfort
The system eliminates the need for on/off impact braking, delivering smooth acceleration and deceleration without any jolts whether the truck is fully loaded, a passenger vehicle is carrying passengers, or it's parked on a slope, thereby reducing cargo vibration and passenger discomfort.
3. Dual-path redundancy for comprehensive security protection
The dual-control circuit operates independently; even if the automatic braking system fails, the vehicle's manual brake air circuit remains unaffected, providing dual safety safeguards and ensuring optimal compatibility for hazardous chemical transport vehicles.
4. Universal and easy to install, low-cost addition
The standardized interface design is compatible with the vast majority of commercial vehicles equipped with pneumatic brakes on the market, eliminating the need for significant modifications to existing pipelines and significantly improving maintenance efficiency and mass retrofitting capabilities.
5. Automotive-grade durability with stable performance under all conditions
Operates across a wide temperature range of-40°C to +85°C, suitable for harsh conditions including severe cold in northern regions, high temperatures in southern areas, and dusty construction sites. Its long-lasting sealing design significantly reduces the frequency of after-sales maintenance.
IV. Comprehensive Application Across All Scenarios
The cruise control proportional air valve is compatible with all commercial vehicles equipped with pneumatic brakes, covering various active safety scenarios.
AEBS (Automatic Emergency Braking System) for heavy/light-duty trucks
1. Automatic braking in blind spots of buses and passenger vehicles
2. Active Safety Systems for Hazardous Chemical Transport Vehicles
3. Collision prevention equipment for mining trucks, forklifts, and port-specific vehicles
4. Commercial Vehicle APA Automatic Parking Assistance System
5. Parking and Slow-Speed Braking Control for Engineering Vehicles on Slopes
Through comprehensive road testing and validation under extreme operating conditions, the product demonstrates stable performance, has been adopted by multiple automakers as a standard component, and is exported to overseas markets including South Korea.
V. Domestic Development and Self-Research: Ensuring Safety Across the Entire Vehicle Industry Chain
Henan Huhang Group is headquartered in Zhengzhou, specializing in comprehensive active safety solutions for commercial vehicles. The company has independently developed a full range of core components—including LiDAR systems, wire-controlled proportional air valves, wire-controlled proportional oil valves, wire-controlled motors, and AEBS collision control units—thereby breaking the technological monopoly of overseas valve manufacturers.
From algorithm software to self-developed integrated hardware valve systems, we provide customized matching and debugging solutions for automakers, along with comprehensive technical services covering component supply, system calibration, and road testing.
In the era of intelligent commercial vehicles, precision braking actuators determine the safety threshold of the entire vehicle. The protective line-controlled proportional valve, manufactured with domestic precision engineering, solidifies the braking foundation and ensures the fundamental safety standards for every commercial vehicle on the road.
For business consultations, bulk component procurement, or vehicle retrofitting solutions, visit Hu Hang Group's official website at www.hu-hang.com; national hotline: 0371-86556688; business WeChat ID: 18569912153.
