Silhouette of a person

Lin Tiejian，Chief Engineer of Guangxi Yuchai Machinery Co., Ltd.、President of Yuchai R & D Institute，Director of National Engineering Research Center for High Efficiency, Energy Saving and Environmental Protection Internal Combustion Engine，Experts who enjoy special government allowances from the State Council，He has long been engaged in the research of efficient and clean combustion technology for commercial power.，Get“National Outstanding Engineer”“National May Day Labor Medal”Wait for the honor。

The full report is as follows

Lately，Sudden temperature drop in Yulin City, Guangxi，However, the laboratory of the National Engineering Research Center for High Efficiency, Energy Saving and Environmental Protection Internal Combustion Engines of Guangxi Yuchai Machinery Co., Ltd. is very hot.。 February ，China's largest hydrogen-fueled engine developed by Guangxi Yuchai Machinery Co., Ltd.YCK16HThermal efficiency breaks through 45%，Reach the world's advanced level。

“Thermal efficiency is an important data to measure the efficiency of engine fuel utilization.。The higher the engine thermal efficiency，The lower the fuel consumption，The more significant the effect of energy saving and emission reduction.。”The chief engineer of Guangxi Yuchai Machinery Co., Ltd.、Lin Tiejian, president of Yuchai R & D Institute, said.，As a hydrogen-burning engineYCK16HLeader of R & D project，He will continue to lead the team to optimize the product.。

From the first diesel engine in China that meets the national emission standards for motor vehicle pollutants in the third and sixth stages respectively，To the first commercial vehicle hydrogen-fueled engine in China；From China's first flexible fuel engine，To the first engine intelligent controller with completely independent intellectual property rights in China……Lin Tiejian presided over the development of a series of advanced power system products.，To contribute to the realization of high-level scientific and technological self-reliance and self-improvement。

January 19，“National Engineer Award”The commendation conference was held in Beijing，Lin Tiejian got it“National Outstanding Engineer”Title。

Recently，Lin Tiejian was interviewed by a reporter from Sci-tech Daily.，He described his struggle in the engine industry.。

01.

Lead the team“Nibble”The hardest under“ Bone ”

Reporter：Would you please introduce what is a hydrogen engine?？

Lin Tiejian：To put it simply，Hydrogen-fueled engine refers to an engine that uses hydrogen as the main fuel。As a combustion limit,、Zero-carbon fuel with low ignition energy，Hydrogen is well suited as a fuel for engines.。

Reporter：Why start the hydrogen engine in the first place?YCK16HR & D projects？

Lin Tiejian：Traditional power vehicles in China，Pecially a tractor、Heavy road freight vehicles such as trucks，The quantity is large，The problem of carbon emissions is more prominent.。

2020“Double Carbon”After the goal is put forward，Scientific researchers in the automotive engine industry strive to make products、Equipment is developing in the direction of green and low carbon。Our technical team is investigating many regions.，After fully understanding the industry situation，Decided to develop a hydrogen engine，Help to achieve“Double Carbon”Aim。

Reporter：Developing hydrogen-fueled enginesYCK16HTime，What technical issues did you and the R & D team members encounter?？

Lin Tiejian：Take fuel, for example.。Just mentioned，Hydrogen is well suited as a fuel for engines.，But there are some difficulties in using it.。For example，Hydrogen atoms have a small mass.，High requirements for material sealing；Hydrogen atoms are small.，Easy to penetrate into steel、Iron、Nickel and other metals and alloys，Cause metal crack embrittlement，Hydrogen embrittlement；The explosion limit of hydrogen is wide.，Very prone to explosion。

Reporter：How difficult are these technical problems?？

Lin Tiejian：The difficulty can be said to be very great.。In addition to the above challenges，In key components、Supercharging technology、Control technology, etc.，Hydrogen engineYCK16HR & D also faces many challenges.。At the same time，On a global scale at that time,，The research and development of hydrogen-fueled engine is still in its infancy.，The accumulation of many technologies is insufficient.，We basically need to start from scratch.。

Reporter：What is the biggest challenge?？

Lin Tiejian：Mainly focused on hydrogen。Hydrogen burns very fast.，It is easy to backfire in the engine intake.，Or pre-ignition and knocking occur in the cylinder.。Tempering、Preignition and detonation are abnormal combustion.。If the problem of abnormal combustion of hydrogen-fueled engine is not solved，You can't make it run efficiently.。

Reporter：How have you and your R & D team responded to this challenge?？

Lin Tiejian：At that time，We have carried out many simulation experiments.，Simulate the combustion system、Flow Field Movement of Hydrogen in Intake System。After dozens of simulation experiments and reviews,，We get the optimal design.。

Other than that，After engine parts are in place，Our team also needs to check the machining accuracy of the parts.，For example, will the piston form a hot spot?、Whether the nozzle leaks, etc.。After a long time of effort，We finally“Nibble”The hardest under“ Bone ”。

Reporter：June 2022，Hydrogen engineYCK16HThe moment the ignition was successful.，How do you feel?？

Lin Tiejian：Ignition is an important node.。The day of the test，Although I seem to be more calm.，But in fact, the pressure is very great.，My heart is always in my throat.。

However，For the whole research and development work，Ignition success is just the beginning.。If you really want toYCK16HHydrogen-fueled engine on the market，We still have a long way to go.。

02.

Enterprises should always adhere to technological innovation.

Reporter：Developing a hydrogen-fueled engineYCK16HIn the process，What major technological breakthroughs have you and your team achieved?？

Lin Tiejian：We are in the combustion system of the hydrogen engine.、High accuracy air fuel ratio control system、Ignition control system、Knock protection control system、Hydrogen fuel system、Great breakthroughs have been made in key components and materials of hydrogen fuel engines.。

Reporter：Can the accumulation of these key technologies promote the research and development of other power equipment?？

Lin Tiejian：Yes, of course。First，Through the development of hydrogen-fueled engines,，We have gradually established a new research and development system and product platform for low-carbon and zero-carbon fuels.，Development of flexible fuel engine technology。This has laid the foundation for the development of other low-carbon or zero-carbon engines.。

Secondly，We're in supercharging technology.、Control Technology、Research achievements in thermal management, etc.，For fuel cells、The development of fuel cell vehicles and other forms of power vehicles have a good reference significance.。

Finally，The research and development of hydrogen-fueled engine technology can promote the application of traditional natural gas direct injection technology.。

Reporter：Hydrogen engineYCK16HWhat is the prospect of market application?？

Lin Tiejian：As a heavy duty hydrogen engine，YCK16HThe application scenarios can be said to be very extensive.。For example，It can be used as a power source for future zero-carbon road transport vehicles.。

It is worth mentioning that，Hydrogen engineYCK16HIt can help power grid peak regulation.。When the power is sufficient，Workers use water electrolysis technology to produce hydrogen.，Hydrogen as residual wind、Photoelectric energy storage carrier，Store excess electrical energy。When the power is low，A hydrogen-fueled engine is useYCK16HConverting stored hydrogen energy into electric energy，Charging the grid system。

Other than that，Hydrogen engineYCK16HIt can also use the heat of engine exhaust and coolant to achieve central heating in winter.。

Reporter：Over the years，You led the R & D team members to break through the key technologies and application bottlenecks of hydrogen engine combustion in the field of commercial vehicles.，Promoting the intellectualization of power equipment in China、Diversification、Develop in the direction of low carbon。Can you talk about the experience of participating in technology research and development for many years?？

Lin Tiejian：Personally, I think，Technological innovation is like a lever to leverage new things.，It can burst out with unexpected power.。Throughout the history of human development，Innovative technology is a country.、A nation、An inexhaustible motive force for the development of an enterprise，It is a key factor in the promotion of social productivity.。

Embark on a new journey，Accelerate the construction of a new development pattern，Promoting high-quality development，Urgent need for science and technology enterprises to adhere to technological innovation，To inject strong impetus into the construction of a modern industrial system。

In recent years，Rapid Development of Guangxi Yuchai Machinery Co., Ltd.，It is benefiting from always insisting on technological innovation.。Through unremitting efforts，At present, China's engine R & D technology has reached the international leading level.。Face the future，We have no mature experience to learn from.，The opponent to surpass is oneself.。Only continuous innovation，In order to get through one difficulty after another.。

Reporter：In recent years，Automotive electrification and low-carbon have brought a series of challenges to the engine industry.。How do you view the future development of the engine industry?？

Lin Tiejian：I think，In the long run，The engine is transported by road.、Agriculture、Engineering、It plays an irreplaceable role in ship and other fields.。Engines can not only burn petroleum fuel，Hydrogen may also、Ammonia、Methanol, etc. As fuel。Personally, I think，There is still great potential for the future development of the engine.。

03.

R & D personnel must start from the grass-roots level.

Reporter：2005，You have received a doctorate degree in power machinery and engineering from the School of Mechanical Engineering, Tianjin University.，Choose to come to Guangxi Yuchai Machinery Co., Ltd.。At that time，Employees with doctoral degrees in the company can be said to be rare.。However，You take the initiative to ask to start from the grass-roots technical personnel.。What were your thoughts at that time?？

Lin Tiejian：When I was a PhD student, my research topic was how to improve the thermal efficiency of internal combustion engines.、Reduce pollutant emissions。When I first joined the company，The second phase of the national motor vehicle emission standards has just been implemented.。At this time，Guangxi Yuchai Machinery Co., Ltd. has begun to market engines that meet the third phase of the national emission standards for motor vehicle pollutants.，At the same time, we are preparing to develop engines that meet the fourth phase of the national emission standards for motor vehicle pollutants.。I can use what I have learned for many years in my work.。

Maybe some people think，Highly educated people should have a higher starting point when they enter the post.，But I don't think so.。I think，No matter how highly educated.，We should start from the grass-roots level.，This is a necessary process.。This is especially true for enterprise technology R & D personnel.，Because only in this way can we have a deeper understanding of the product development process and the operation mechanism of enterprises.。

Reporter：For 20 years，You have grown from an ordinary R & D engineer to the leader of the R & D team.。Combine personal experiences，Would you please talk about how young scientists and technicians can grow faster?？

Lin Tiejian：Over the years，I was able to grow up so fast.，A very important reason is to catch up with the country.、Industry、The rapid development period of the enterprise。Your own efforts are important，However, the role of the external environment can not be ignored.。

The current innovation environment、Better innovation atmosphere and support policies，What young scientists and technicians should do is to carry out technological innovation in a down-to-earth manner.。Whenever，Technological innovation will certainly encounter difficulties and challenges.。Only put your mind right.，Endure loneliness.，Be prepared to fail many times，In order to keep the clouds open and see the moon.。

Reporter：Combined with years of experience，To train scientific research talents in the engine industry，Do you have any suggestions?？

Lin Tiejian：Personally, I think，At present, personnel training is difficult to meet the development needs of the industry.，The engine industry needs a lot of fresh“ Blood ”。However，Some people think engines are a sunset industry.。As a result, many engineering graduates are reluctant to work in this industry.。

I suggest，In terms of the environment，Efforts should be made to publicize and popularize science.，Let the public know the development trend of engine and the development status of engine industry in China.。In terms of specific training，I suggest that universities and research institutes train mechanical engineering.、Thermal power、Electronic information、Software control、Students in the direction of intelligent algorithm，Guide them to apply what they have learned to the field of engine research and development。

In terms of talent introduction，Relevant enterprises in the engine industry should adopt a more flexible introduction mechanism.，Attract more different majors、Talents from different regions。

Reporter's notes

Lin Tiejian in the eyes of reporters，Speak shyly，A little bookish。It's hard to tell from the outside.，He's a.“Experienced in a hundred battles”The chief engineer。

Ever since I was a teenager.，Lin Tiejian is fascinated by power equipment.，I love all kinds of car models.。After receiving a doctor's degree，He came to the southwest of the motherland from Tianjin.，Start the journey of engine technology exploration。

The last 20 years，Lin Tiejian devotes himself to the research of efficient and clean combustion technology.，Accelerate the localization process of core key components，It breaks through the key technologies and application bottlenecks of hydrogen-fueled engine combustion in the field of commercial vehicles.。In the field of power equipment，He has always insisted on innovation-driven development.，Keep improving on technology research and development。

Manufacturing is the foundation of a country.、The foundation of a powerful country。In the interview，Lin Tiejian repeatedly mentioned“Low carbon”Two words。For Lin Tiejian and his colleagues，They are responsible for promoting the high-quality development of the power equipment industry.，It also shoulders the mission of ecological civilization construction.。

Struggle for twenty years，Hair turns grey。In the traditional power track and the new energy track，Lin Tiejian broke through the pass again and again，Overcome difficulties again and again。

“Realize a powerful power，This is my dream.，It's also my mission.。”Lin Tiejian said，On the way to pursue dreams，He will move on.。