From April 15th, 20th, the grading test to the successful triumph on April 18th, 2019, during the entire verification process, the vehicle has completed four downhill tests. The starting point is Kangding toll station and the end point is Tianquan service area. 88 kilometers, downhill section reached 76.6 kilometers, including the Erlangshan tunnel with a total length of 13.4 kilometers, the 30-kilometer long downhill slope from Kangding to Luding, and the 42-kilometer downhill slope from the Erlangshan tunnel to the Tianquan section. Yakang Expressway has not been opened to the heavy truck since the whole line has been completed. The safety verification of this long-long longitudinal slope is precisely to determine whether the altitude difference is as high as 1900 meters, and the long and dense Yakang high-speed section of the downhill section meets the conditions for safe passage of heavy trucks. In the future, heavy-duty trucks will pass the Yakang Expressway to develop relevant safety standards and traffic strategies. After inspection, the Tianlong flagship test tractor equipped with the Voith hydraulic retarder is fully capable of safely downhill on the test section. The Tianlong flagship participating in the downhill safety inspection is equipped with the Voith hydraulic retarder VR 115 CT. According to the test driver Li Xinhua, "We have carried four downhill tests on the two sections of the Yakang high-speed downhill slope for three days. The process is very smooth. The downhill slope relies on the vehicle configuration. The Voith hydraulic retarder (brake), (except for the final stop) did not step on the brakes." The Voith hydraulic retarder VR 115 CT equipped with the vehicle has four gear positions, and the switch is located on the combination switch on the right side of the steering wheel. A file, that is, the first gear is a constant speed gear, designed for downhill. "Most of the time, I only need to gently dial the combination switch to open the hydraulic retarder to the constant speed gear, which is enough to control the downhill speed." Li Xinhua said. In the verification process, Master Li Xinhua started the Voith hydraulic retarder from different speeds according to the requirements of the test group data monitoring. He said, "No matter what speed is used to open the liquid, the speed can be controlled. Just dial the corresponding adjustment gear according to the situation, and do not need to step on the brakes. The burden on the body is not so big. The operation is very easy in the whole process, no need to worry about the brake pad overheating, (braking performance) decline or even failure; do not have to worry about the water is not enough. Safety and comfort have been greatly improved." It is worth mentioning that during the entire downhill verification process, only the Voith hydraulic retarder is used for braking. The engine water temperature of the vehicle is almost no increase, and it is maintained at around 80 degrees Celsius. The success of this Yakang high-speed long-slope and tunnel group operation safety inspection project fully proves that Voith hydraulic retarder is worthy of “downhill artifactâ€! Following Yaxi Expressway (Ya’an-Xichang) and Kunming After the high speed (Kunming - Mohe), Voith once again successfully challenged Yakang Expressway with excellent results. China has a large number of long downhill sections with complicated road conditions, and the sad traffic accidents have repeatedly occurred. As the inventor of the hydraulic retarder, Voith is willing to contribute its own strength to China's road traffic safety and escort 30 million truck drivers! Anti Fog Ski Goggles,Frameless Ski Goggles,Polarized Ski Goggles,Kids Ski Goggles Dongguan Yoloon Sports Goods Co.,LtD , https://www.yoloonprotections.com
Voith hydraulic retarder safety inspection project was a complete success 
The entire section is 42 kilometers long downhill 
Voith Hydraulic Retarder VR 115 CT 
Detecting the driver of the vehicle, Master Li Xinhua 
Detecting that the engine water temperature of the vehicle is hardly rising
Challenge 42 km continuous long downhill! Voith successfully guards safety
On April 18, 2019, the Tianlong flagship test tractor equipped with the Voith hydraulic retarder slowly entered the Yakang (Yaan-Kangding) high-speed Tianquan service area, which was not yet open to heavy trucks, marking the Yakang Expressway. The long longitudinal slope and tunnel group operation safety inspection project was a complete success!