News Title:
Engineering Precision in Extreme Climates: Junchi Tech Unveils Next-Generation Stepper Motors and HVAC Actuators with Sub-35dB Noise Performance
Date: October 26, 2023
Category: Product Innovation / R&D
Author: Zhengzhou Junchi Tech Co., Ltd. Engineering Team
Summary
Zhengzhou Junchi Tech Co., Ltd. announces the mass production readiness of its latest high-performance Stepper Motors and HVAC Actuators (Intake & Mode II). Engineered to operate flawlessly from -40°C to +85°C, these new components feature industry-leading noise suppression (≤35 dB) and robust torque stability, setting a new benchmark for automotive climate control comfort and reliability in both traditional and new energy vehicles (NEVs).
The Challenge: Climate Control in Extreme Environments
In the modern automotive landscape, the Heating, Ventilation, and Air Conditioning (HVAC) system is no longer just about cooling or heating; it is a critical component of passenger comfort and vehicle efficiency. According to industry trends, one of the top customer complaints regarding auto HVAC systems is NVH (Noise, Vibration, and Harshness), particularly the “whining” sound of actuators and motors during temperature adjustments.
Furthermore, as vehicles are deployed in diverse global markets—from the freezing winters of Northern Europe to the scorching summers of the Middle East—components must maintain precise torque and speed stability across extreme temperature gradients. Standard motors often suffer from torque drop-off at low temperatures or insulation failure at high heat.
Junchi Tech’s Engineering Breakthrough
Leveraging our IATF 16949:2016 certified manufacturing processes, Junchi Tech’s R&D team has overcome these challenges with two flagship product lines: the High-Precision Stepper Motor and the Robust HVAC Actuator Series.
1. Ultra-Quiet Stepper Motor: Redefining Cabin Silence
Our new Stepper Motor is designed specifically for blend door and air distribution control where silence is paramount.
- Noise Suppression: Through optimized gear ratios (1:300) and precision winding, the motor achieves a noise level of ≤35 dB(A) under both no-load and loaded conditions (40N·CM). This is quieter than a typical library environment, ensuring imperceptible operation within the cabin.
- Extreme Temperature Torque Stability: A common failure point in competitors’ products is the loss of starting torque in cold weather. Junchi’s motor delivers:
- >65 N.cm starting torque at -40°C (8V).
- >35 N.cm starting torque at +85°C (8V).
- This ensures that dampers open and close reliably even after the vehicle has been parked overnight in sub-zero conditions.
- Durability: With a holding torque of ≥70 N.cm and a protection class of IP50, the motor is built to withstand dust and moisture ingress while maintaining over 7,000 steps per revolution for precise airflow positioning.
2. Intake & Mode II Actuators: Reliability Under Load
For broader airflow management, our new Actuator series (Intake II and Mode II) offers a balance of power and speed.
- Rapid Response: The Mode II Actuator completes a 90° rotation in just 3.5 seconds under a 0.3 N.m load, allowing for faster cabin temperature stabilization.
- Voltage Resilience: Designed to operate within a wide voltage range (DC 7V – 15V), these actuators ensure functionality even during engine cranking when battery voltage dips.
- Safety & Locking: With a lock torque exceeding 1.5 N.m, the actuators securely hold damper positions against high air pressure, preventing unwanted airflow leakage.
Commitment to Quality: The IATF 16949 Standard
At Junchi Tech, innovation is grounded in quality. Every unit produced undergoes rigorous testing aligned with ISO 45001 safety standards and IATF 16949 automotive quality requirements.
- 100% Duty Cycle: Our stepper motors are rated for continuous operation, ensuring longevity in stop-and-go traffic conditions.
- Connector Integrity: All actuators feature connectors tested to withstand 98N of static load in multiple directions, preventing connection failures due to vehicle vibration—a common issue in heavy-duty trucks and construction machinery.
Application Scenarios
These new components are immediately available for integration into:
- Passenger Cars & SUVs: Enhancing premium cabin comfort with silent operation.
- New Energy Vehicles (NEVs): Optimizing energy efficiency through precise airflow control, crucial for extending EV range.
- Commercial Trucks & Construction Machinery: Providing rugged reliability in harsh operating environments.
A Message from Junchi Tech
“Our goal is not just to supply parts, but to solve the thermal management challenges of our global partners,” says the Chief Engineer at Junchi Tech. “By pushing the boundaries of torque stability at -40°C and reducing noise to near-silent levels, we are helping OEMs deliver a superior user experience.”
Kontakt
Automotive manufacturers and tier-1 suppliers looking for reliable HVAC solutions are invited to request samples or technical datasheets.
- Website: www.junchicn.com
- Certifications: ISO 9001, IATF 16949, ISO 14001, ISO 45001.
