In 8 years, more than 700 days and nights are sticking to and fighting hard, the completion of calibration tests for 160 models, the collection of tens of thousands of experimental data, and the industry's first team to carry out “three-high†calibration, establishing the industry’s first “three highs†“The calibration rigs... This series of labels, along with sand, rain and snow, gradually converge into the image of Yuchai’s “ three high†calibration test team . This is a group of heroes who are shouldering the destiny of national industry.
From 2005 onwards, Yuchai will conduct high temperature, altitude, and high-temperature calibration tests each year. To achieve the best test results, this young team of electronic control engineers, design engineers, application engineers, test technicians, and professional test pilots, like a group of migratory birds, from south to north and from north To the south. However, compared with birds, they are always looking for the most comfortable living environment. They are more like a group of “anti-migratory birdsâ€, and go against the law of the season. During the hot summer, they stepped into the Turpan Basin and climbed the Qinghai-Tibet Plateau. During the cold winter months, they went deep into the snow and the northern Xinjiang and the Mohe Polar Regions.
A fighting battle
July 23, 2012, Midsummer. When everyone was still enjoying the cool air conditioning, early in the morning, Yuchai Electronic Control Engineer Yang Fangzi led the first team to set off from Yulin, Guangxi. The three-high-calibrated "rising star" is preparing to go to the first stop of the trial - more than 1,000 years ago, he trapped the legendary mythological figure Sun Wukong's Flaming Mountain, where they will conduct high-temperature calibration tests of the Yuchai Engine.
In five days, nearly 4,000 kilometers of long-distance travel, the team finally arrived at the destination. Located on the Flaming Mountain in the Turpan Basin, it is fully described in "Journey to the West": In the Eighty Miles, Flaming Mountain is not alive, its crimson cliffs are full of clouds, and its clouds are steaming and shining like a volcano on the Gobi. In reality, Flaming Mountain, although not as dangerous as Wu Cheng-en's, is also a crisis. "When I went through the hot pole center of the Flame Mountain's Alchemy Furnace, I purposely glanced at the giant mercury column that stood there, 73°C. There was absolutely no problem with this fried egg." Yuchai Electric Engineer Ye Shengbin said with a smile. He has participated in the three-high calibration for four consecutive years. He has extensive experience and is considered to be "Laojianghu."
The trial is hard. Compared with Hainan's specialized test site, the temperature in the Turpan area is higher. The highest average temperature in August is above 42°C, and the maximum temperature in the afternoon can reach 48°C. Moreover, the air is dry and worse than the hot and humid environment. During the test, some conditions are not allowed to open air-conditioning, in order to avoid excessive wind resistance, windows are closed. “Once the air-conditioner is turned off, the car becomes a veritable stove,†said Yang Fangzi.
For Du Yu, a young electronic control engineer who first participated in the three-high calibration test in 2012, this experiment was a thrilling one. One time the test vehicle quickly returned along the expressway, a sudden strong wind carried a small stone. Through a window that was not closed, it shot straight into the cab and once it broke his right lens. Fortunately, Did not hurt the eyes. The young man, only 24 years old, had just graduated from Beijing Aerospace University for two years and he was scared cold. But afterwards, he smiled and said: "Exactly, this pair of glasses that were worn for four years can finally be 'retired'. Before that, they still did not give up."
In order to ensure that the Yuchai Engine runs properly in any harsh environment and operating mode, this group of young, post-80s experimental teams are conducting various tests in a way that is almost torturing themselves. In order to calibrate the thermal protection function of passenger vehicles under high-speed conditions, they will maximize the speed of the vehicle on the highway as much as possible when the vehicle is fully loaded. This is extremely dangerous, and a sharp turn may lead to vehicles. Destroyed. At one time during the high-speed test, the vehicle ran for more than 20 minutes at the maximum speed. Suddenly, the pilots smelled a strong smell of diesel. When the vehicle was parked, it was found that there was a serious leak in the injector return pipe. Immediately afterwards, they found a large amount of coolant leakage. After inspection, the original situation was affected by the terrain, strong winds driven by the rapid operation of vehicles, rolled up small stones scattered on the roadside, the water tank broke through five or six holes, and the tires were cracked. Everyone was shocked by what they saw as a “terror,†but after the vehicle was pulled back to the service station, they began the rest of the trial.
In this fight to fight, they finally won. After 20 days of high-temperature calibration tests, we matched the driving, dynamic and overheat protection functions of 8 models of Xiamen automobile manufacturers including Jinlong, Golden Travel, Futian, Liuzhou, Dongfeng and Beiben. Basically, the state of optimization has been achieved. The cooling systems and engine key components of each model have also been fully verified under high temperature conditions, providing a lot of experimental evidence for future design work.
Eating is also an individual activity
In parallel with the high-temperature calibration test, plateau calibration tests were performed on the Qinghai-Tibet Plateau. In this experiment, Yuchai selected three locations, namely, the outskirts of Golmud, Nachitai and West Grand Beach. Golmud suburbs 2900 meters above sea level, pressure 720hPa (plain is 1013hPa), Naqitai 3500 meters above sea level, pressure 650hPa, West Beach 4500 meters above sea level, pressure 570hPa, oxygen content less than 60% of the plains, which for this group has been living in the plain For the pilots in the area, the high altitude depression makes them feel very uncomfortable. "Although the upper plateau was specially eaten before the plateau, the Jingtian Honghua capsules were taken, but after the plateau, there were still plateau reactions with chest tightness and shortness of breath. Here, the weather in the four seasons can be fully understood one day, sunny, rainy, snowy, Hail can occur at the same time in one day," said Shao Zhaohui, a Hubei boy who just graduated from Wuhan University of Technology for one year. He likes to take photos. Although he carried his own camera, busy experiments made him have no time to take into consideration the beauty of the place. During the test period of nearly two months, he and his colleagues did not rest for a day and they got up at 7 every day. Starting from 8 o'clock, it was only 8 o'clock at night to return to the campsite. After a brief wash, he continued to write a test report at the residence and discuss the trial plan until late at night. As the weather was extremely dry, the test team had to drip water all over the room, put a wet towel on their nose, and opened their mouths to breathe. "Every day I feel there is blood in my nose," Shao Zhaohui said.
At 8 a.m., the test team set off from the apartment on time, took the rigs and bedding for the test, and after a few hours of trek to reach the destination where it was rarely visited, the snow that had not been used for many years concealed Cangshan not far away, silently. Watch them. Get off, the tester is busy installing the test bench, and the technician connects the computer and debugs the equipment. The altitude sickness has caused their actions to be severely restricted, and every step of the way is cautious. “It is often necessary to take a two-step break and move slowly. In particular, the test bench is installed and tested. It feels like it is sitting on a mountain and the heart beats fast.†Test worker Ning Shengsheng said. Things that can be done in the usual half an hour, where they often take an hour.
The accompanying drivers cannot rest at this time. They must act as chefs and be responsible for solving the group's lunch. The pressure on the plateau is low, and cooking can only be done with a pressure cooker. However, cooking is very laborious. Even if the fire is increased, the reaction of the cauldron has not changed. “Some foods that are a little hard to come by, we have to eat raw.†Ning Yousheng said, while showing a photo stored in the phone, in which he put his hands close to the hot pot, “I don’t feel anything at all. hot."
At about 1.5 o'clock in the afternoon, everything was ready and the test bench began to heat up. At this time, the experimenter had time to stop for lunch. "Don't think that we can take a rest. The challenge really begins." Shao Zhaohui said with a smile. The low pressure in the plateau makes eating a physical activity. "The rice can't be stuttering. Take a small sip and slowly chews. You have to stop for a few breaths and take a few breaths." After a meal, everyone was panting and sweating. "You have to eat an hour for a meal," said driver Li Qinsheng. After the meal, the experimenters had to immediately invest in the test and collect the test data, so that it would be until 5-6 in the evening.
The cold is a deadly disease on the Tibetan Plateau. A small cold can often cause acute pulmonary edema under the action of the plateau. Therefore, the pilots paid special attention to preventing colds. However, Cao Lei, the young electronic control engineer, accidentally said. Over the past few days of fatigue and soil dissatisfaction, so he suddenly launched a high fever, nose blowing tears DC. However, after taking the medicine and slept at night, he drove out with the car the next day. "The manpower is already very tight and each has its own responsible test. I cannot delay the progress of the test because of the delay," said Cao Lei. He came to Yuchai’s 2-year-old Gansu Thunder Thunder Copper. He was responsible for the 2 generators in this plateau calibration test. Because of the special working conditions of the generator, he had to go up to 4,500 meters above the plateau for several days in succession. He continued to work for a long period of time, causing him to experience significant altitude sickness. Although he was considered a boy born in the highlands, he could not afford such a long period of high altitude and high intensity work. One night, on the return trip, he vomited. The little boy with a body weight of only about 100 pounds was pale and spits out all the bile. But in the end he jerked and said jokingly: "Just just go back and eat more."
"The main content of the 'three-high' calibration is to verify and optimize the performance and components of the engine, and to match and determine the optimization of the complete engine of the matching engine. After the 'three-high' calibration of the vehicle, the user can rest assured. The drivers are used everywhere, even in extreme environments and with more stringent operating methods, our engines can work properly. This is responsible for our customers and responsible for ourselves." Xin Jian, head of the Highly-rated Yuchai Engineering Research Institute's vehicle test group, explained the importance of the three-high calibration and explained the significance of their trip.
For "big" homes "small" home
In the blink of an eye, the summer high temperature and plateau calibration tests ended with the pilots returning to Yulin after being dark and tired. In the two-month trial, the vehicle calibration team completed the high-temperature and plateau calibration tests for the eight models, and the calibration team for the plateau mobile platform completed a total of eight models and 16 program bench tests. However, the achievement of the results will inevitably make the experimenter sacrifice some things, whether family or love. They abandoned their own "small" home for the "big" home of Yuchai and the "big" home of the engine industry. Xinjian’s children had a good summer vacation. Due to his wife’s busy work, he was outside and nobody would manage to play computer games at home every day. “It was almost a wild child.†Shao Zhaohui did not dare to reveal before he went to test. Wherever he wants to go, even if the vehicle passes through the entrance of Wuhan, he does not get off to see it. He is afraid that his parents are worried that at the train station in Wuhan, he runs all over the platform and wants to eat a bowl of Wuhan specialties. But eventually he did not find it. So he left the land and sent a message on QQ about “Wuhan, Good Night!†Yang Fangzi sent his wife back to her hometown in Xinjiang to let her family take care of herself; Cao Lei’s wife He was pregnant, but he could not accompany him on his side. Every time he had a wife and a man to do an examination. When he came back, his wife was about to give birth; Su Liyong’s child was only a few months old, no matter how tired or late every day, he would give Making a phone call at home and listening to his son's voice is the most enjoyable thing in his day...
After returning from the Qinghai-Tibet Plateau to Yulin, driver Li Qinsheng caught a cold. In the Yulin hot day, wearing a coat and coughing, this is a typical plateau sequelae. "Every time I come back, I feel particularly tired and hard working. My family members also persuade them not to go. They also have ideas that cannot be resolved. However, every time the 'Three High' calibration test selects personnel, they all apply again." Laugh and explain the team's contradictions. Xuan Xianchuan, Huang Yunxia, ​​Li Qinsheng, Xin Jian, Huang Guangyi, Wen Hailong, Lin Chunsheng, Wu Xuebing... They are all three-high-calibrated Lao Jiang Hu. They have been fighting for years at the front line of “three highs†calibration.
As the weather turned cooler and the temperature continued to drop, the team members were preparing to pick up their bags and headed to Heihe Heihe, where the temperature was minus 40 degrees, to carry out the winter alpine test and begin a new journey. They are not good at words, but they always use a hot heart to exchange customers' trust in Yuchai products. They have a common dream and may wish Yuchai’s “core†to move China.
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