In the past few years, how to improve the efficiency of vehicle gearboxes has become an important development trend in automotive design due to the need to reduce fuel consumption and optimize the market demand for power. There are two driving forces behind this trend: one is that in places with high oil prices, such as China and India, the main driving force is the operating cost of customers, because fuel cost is a crucial factor in the total cost of vehicle purchase; The second is that in markets where oil prices are at the world average, such as the United States, government incentives and demands are the main driving force for efficiency.
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Vehicle manufacturers are aware that improvements in gearboxes and powertrains are the most effective means of improving fuel efficiency. This improvement can be achieved by optimizing the pre-determined speed shift and each gear shift point and considering the vehicle's load status in all aspects. To achieve the desired efficiency, manufacturers place higher demands on the performance, flexibility and reliability of the sensors used in the drive train.
The speed sensor detects the wheel speed data transmitted to the controller to optimize the shift. These sensors must meet the manufacturer's pre-set performance parameters, taking into account the speed range of the operation, the temperature range, the electronic characteristics of the sensor, and the type of signal being output and overall accuracy. The flexibility of the sensor structure is also very important to the designer of the drive train. Because each gearbox design is different, flexibility in sensor cables, connectors, housing length and diameter, and electrical interface allows the designer to integrate the sensor into the drive system based on the location of the specific design.
Speed ​​sensors for gearboxes are designed to increase reliability and reduce procurement costs:
• Liquids and debris in the vehicle penetrate into the sensor
• Vibration level affects sensor integrity and accuracy
• Air gap tolerance too tight will damage the sensor components
Honeywell's sensing and control of the speed sensor for the gearbox uses Hall-effect magnetic sensing technology to provide an accurate digital signal that allows the controller to recognize the shift points for each gear. Our wide range of products, including sensors with different electrical and performance characteristics, meets the manufacturer's requirements for product specifications. We also offer custom sensors that adjust the physical characteristics of these sensors to meet the manufacturer's design requirements. In addition, we also provide test samples that ensure good performance before the sensor is officially put into production. As part of the design process, Honeywell uses finite element analysis to simulate magnetic field effects and environmental stresses that can affect sensor performance to help develop an optimal target wheel and sensor structure. This will minimize application problems that will be encountered in the design process in the future. The product line series has IP66, IP67 or IP69K protection to prevent sensor leakage, and can withstand 30G shock and 20G vibration environment to ensure high precision performance.
Honeywell has a dedicated technical support team with years of global experience in designing speed sensors for vehicle gearboxes. Honeywell's design team is currently working on a new generation of speed sensors that will have a higher level of customization and higher air gap flexibility.
Honeywell invites you to work with our global technical support team at the beginning of the design to better understand your application, taking into account factors such as quality, flexibility, price and delivery time to find the most suitable for your design. Value of the gearbox speed sensor.
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