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ym888

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Four World Records Set Weichai Power Unveils World's First Diesel Engine with 53.09% Thermal Efficiency

TIANJIN, China, April 20, 2024 /PRNewswire/ -- On April 20, 2024, the 2024 World Congress on Internal Combustion Engines grandly commenced in Tianjin, China, showcasing the industry's latest technological advancements. At the event, Weichai Power unveiled the world's first diesel engine with an intrinsic thermal efficiency of 53.09%. This remarkable achievement was officially recognized by TÜV SÜD, an international authoritative testing organization, and the China Automotive Technology & Research Center, a professional testing body for Chinese internal combustion engines. Both organizations issued product testing reports and certificates to Weichai Power, confirming the company's new world record in the key economic index of diesel engine thermal efficiency.

Since the inception of diesel engine 127 years ago, scientists and engineers across the world have pursued the goal of enhancing thermal efficiency as a lifelong endeavor. This intricate challenge not only encompasses a complex system engineering process but also represents a measure of a nation's comprehensive strength in internal combustion engine technology. Over time, the continuous quest to improve the thermal efficiency of diesel engines has remained an ongoing international challenge.
Since 2015, Weichai Power has assembled a high-thermal efficiency engine research team comprising hundreds of young Ph.D. holders and thousands of engineers. This team has been collaborating with leading minds domestically and internationally, along with industry-university-research partners, to conduct cutting-edge technical research and continually push the boundaries of innovation. On September 16, 2020, Weichai Power marked a significant milestone by introducing a diesel engine with a record-breaking body thermal efficiency of 50.23%. The company continued its remarkable progress by further increasing the engine's thermal efficiency to 51.09% on January 8, 2022. Most recently, on November 20, 2022, the company surpassed its previous achievements, reaching an impressive 52.28% thermal efficiency, which demonstrates Weichai Power's pivotal role in leading the global internal combustion engine industry's technological advancement.

Building on its previous achievements, Weichai Power's research team dedicated more than 500 days of focused effort to further refine four critical systems: combustion, air intake, fuel delivery, and friction reduction. The team successfully advanced high-expansion combustion, mixed-flow pressurization, high-efficiency fuel injection, and low-resistance friction-reducing technologies. These developments, achieved through incremental gains of 0.1% at each step, culminated in a remarkable milestone: breaking through the 53% thermal efficiency barrier for the first time globally, a feat akin to a human running the 100-meter race under 9 seconds. During this research and development process, the team was granted 176 invention patents and 68 utility model patents.
Mr. Dirk von Wahl, CEO of TüV SÜD North Asia, extended his congratulations to Weichai via video message. He acknowledged that Weichai's recent achievements are exceptional on the global stage, far exceeding current standards. This reflects not only Weichai's robust scientific research capabilities but also its strong technical prowess in the internal combustion engine industry. Wahl expressed his belief that this technological milestone will significantly support China's carbon peaking and carbon neutrality goals and green development initiatives, while also contributing to the sustainable growth, energy conservation, and emissions reduction of industries worldwide.

Based on current estimates of Chinese diesel engine ownership, upgrading from a thermal efficiency level of 45-46% to 53% can improve the diesel engine economy by approximately 14%. This advancement translates to annual fuel savings of around 31 million tons and a reduction in carbon emissions of approximately 97 million tons. For a heavy-duty tractor that travels 250,000 kilometers annually, this improvement can save roughly 12,000 liters of diesel fuel each year. Given the current market price of diesel fuel at 7.8 yuan per liter, this equates to an annual savings of about 98,000 yuan for the owner. In addition to transportation, this technological advancement will extend its impact to various sectors, including construction machinery, agricultural equipment, ships, and power generation equipment, making new contributions to the world's economic and social development.
Tan Xuguang, vice president of the Chinese Society for Internal Combustion Engines, director of the State Key Lab of Engine and Powertrain System, and chairman of Weichai Power, and Chairman of Weichai Power, attributed Weichai Power's four consecutive breakthroughs in diesel engine thermal efficiency to the nearly 4,000 days and nights of intellectual dedication by Weichai engineers. He also acknowledged the crucial role of open collaboration with top global universities and research institutions, as well as the synergy achieved through innovation with the global industrial and supply chains. Tan emphasized that this achievement not only belongs to Weichai but also contributes to the advancement of the global industry as a whole.
 

SexyChineseLady

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Nice! India increased exports to China! Very complementary trade. China imports raw material from India and exports machinery to India.


Among the key export items from India to China during the fiscal year 2023-24, iron ore and concentrates, cotton yarn, quartz, and unwrought aluminum emerged as the leading categories. These exports underscore India’s diverse export portfolio, tapping into various sectors to meet China’s demand.

On the import side,
machinery of all kinds dominated India’s imports from China, constituting nearly 50% of the total imports. Additionally, other significant imports from China included plastics and its articles, chemicals, steel and steel products, and fertilizers, highlighting India’s reliance on Chinese goods across various sectors.
 

jai jaganath

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Magnetic power!!!



China's lightweight Electro-magnetic catapult will be going into LHDs!!!! not just supercarriers :)

View attachment 249453
Must say so called vaccum tube concept or hyperloop is completely impractical
Even there u can reach 1 mach but again economically not feasible
Anyways was waiting for launching of new series of maglev trains but last I heard those got delayed
 

SexyChineseLady

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Must say so called vaccum tube concept or hyperloop is completely impractical
Even there u can reach 1 mach but again economically not feasible
Anyways was waiting for launching of new series of maglev trains but last I heard those got delayed
Impractical until someone makes it practical.

People forget that personal computers and hand-held phones were once considered inpractical for the masses :)

That said, even if a maglev-vacuum system is never put into mass production, just building a prototype would increase technical capability.
 

jai jaganath

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Impractical until someone makes it practical.

People forget that personal computers and hand-held phones were once considered inpractical for the masses :)

That said, even if a maglev-vacuum system is never put into mass production, just building a prototype would increase technical capability.
Technically proven doesn't mean economically feasible
U can build a critical thing but bringing it to production is another challenge
Maglev trains are there to stay in future they are feasible and most development scope exists
I don't think hyperloop concept has its existence in near future defence after 40-50 years
Who knows but yeah conceptualization takes time along with proving the tech
 

Azaad

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Impractical until someone makes it practical.

People forget that personal computers and hand-held phones were once considered inpractical for the masses :)

That said, even if a maglev-vacuum system is never put into mass production, just building a prototype would increase technical capability.
But just a few months ago you were claiming China's on the verge of validating MAGLEV / Hyperloop technology & were planning on building thousands of kms by way of a network connecting different cities.

Why the doubts now ? What happened ? MSS got a memo from CCP not to overdo the propaganda or is it something else ?
 

SexyChineseLady

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But just a few months ago you were claiming China's on the verge of validating MAGLEV / Hyperloop technology & were planning on building thousands of kms by way of a network connecting different cities.

Why the doubts now ? What happened ? MSS got a memo from CCP not to overdo the propaganda or is it something else ?
Sir, you are making things up and attributing these delusions to me in order to "prove" some ridiculous cope ;)
 

Azaad

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Sir, you are making things up and attributing these delusions to me in order to "prove" some ridiculous cope ;)
Frankly I don't have the patience or the inclination to go searching for your posts where you made this claim . 😭

Had I been a few years younger I'd have bookmarked your post & reproduced it here for everybody else to see but then I realised when I did undertake such activities it used to be against members with gravitas not against members who were flippant or members who were professional trollers like you & your compatriots.😭

I don't take you or your fellow Wumaos seriously as does the entire DFI Indian membership except your cheerleader here.😭
 

MiG-29SMT

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Mister propaganda man does not understand why C919 has less range than A-320 Neo or B-737 Max?

Obviously he can not understand why no one is buying its C919 like a good propaganda (in reality even in that fails) C919 can not compete in performance due to a very simple fact


The fact is Leap engine 1C generates less thrust than Leap 1A and it is heavier

A/C application A320neo family Takeoff thrust Up to 35,000 lbf * Bypass ratio (CR) 11:1 class Overall pressure ratio (T/O) 40:1 class Fan diameter 78’’ Compressor Stages (fan / booster / HPC) 1+3+10 Turbine Stages (HP / LP) 2+7 Combustor TAPS II Control FADEC IV C

A/C application C919 family Takeoff thrust Up to 30 K Bypass ratio (CR) 11:1 class Overall pressure ratio (T/O) 40:1 class Fan diameter 78’’ Compressor Stages (fan / booster / HPC) 1+3+10 Turbine Stages (HP / LP) 2+7 Combustor TAPS II Control FADEC IV





5. ETOPS Capability LEAP-1A: When compliant with CFM Service Bulletin LEAP-1A 71-0006, the LEAP-1A engine is approved for ETOPS capability in accordance with CS-E 1040 amendment 3 by EASA Certificate 10062224 dated 16 June 2017 for a Maximum Approved Diversion Time of 180 minutes at maximum continuous thrust plus 15 minutes at hold thrust. ETOPS does not require any special engine limitation, marking, placard, or configuration other than as instructed by the Service Bulletin. This approval does not constitute an approval to conduct ETOPS operations. LEAP-1C: The LEAP-1C engine is not approved for ETOPS capability in accordance with CS-E 1040.
EASA.E.110 LEAP-1A & LEAP-1C series engines
 
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