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Years of development results On March 13, Weichai Power held a new product launch ceremony at the Diaoyutai Hotel in Beijing, bringing the HPDI engine to market for the first time. This technological innovation was developed and manufactured by China's first joint venture company, Weichai Power Westport New Energy Engine Co., Ltd., which develops and produces in-cylinder direct injection natural gas engines. The successful development of the project has filled the gap in the application field of domestic natural cylinder direct injection engines.
The development of the Weichai natural gas engine started in 2005, and today, Weichai has basically developed a full range of gas engines. In 2008, Weichai Power Co., Ltd. and Canada Westport Innovation Co., Ltd. and Hong Kong Peixin Investment Co., Ltd. jointly signed a joint venture to establish Weichai Power Westport New Energy Engine Co., Ltd. The joint venture company has the world's leading natural gas engine technology with high-pressure direct injection as the core, integrating research and development, production and sales. It is committed to providing heavy-duty trucks, urban public transport, marine, power generation, engineering machinery and other fields to the Chinese and international markets. Natural steam engine series.
Combined with the excellent blue engine platform of Weichai Power, through the introduction of high pressure direct injection technology from Westport, Canada, the joint venture company has successfully developed the world's leading high pressure direct injection natural gas engine in China. The engine uses natural gas as the main fuel while ensuring the power, torque and efficiency of the original diesel engine, bringing a revolutionary technological innovation to the traditional spark plug-ignited natural gas engine.
On September 9, 2011, it was a historic moment for the HPDI engine: the first in-cylinder direct injection engine was successfully completed at Weichai Power Westport Laboratory. Ma Yuxian said that the HPDI engine is a fifth-generation gas engine. It has been widely used in public transportation, trucks, passenger cars, etc., and recently loaders and ships have begun to assemble such products.
Four characteristics It is understood that the HPDI engine has the following four characteristics compared with the traditional diesel engine:
First, the emission standards are high. The HPDI engine uses an oxidizing catalyst, which is injected into the cylinder with 5% diesel before the compression top dead center. 95% of the natural gas is injected into the flame at a pressure of 300 bar to become the main fuel combustion work, thereby reducing particulate matter emissions. 70%, CO2 is reduced by about 20%, reaching the national five emission standards. For diesel engines to meet the national five emissions, a higher cost selective catalytic reduction system is required.
Second, the economic benefits are significant. First, the price of natural gas is lower than the price of diesel. Secondly, the control of the throttle-free engine load saves fuel consumption. The high-pressure direct injection nozzle can further improve performance and reduce fuel consumption, emissions and noise according to the common rail injection engine design. Therefore, the user's fuel cost can be greatly reduced.
Third, the reliability is high. HPDI engine parts and diesel engine have high versatility, no need to change the piston and engine body, and its operation mode is the same as that of diesel engine, and the reliability reaches the level of the same power diesel engine. In addition, there is potential and higher reliability due to the low exhaust gas temperature. In addition, the HPDI engine does not require air-fuel ratio control to avoid knocking and fire. Its thermal load is also lower than that of a spark plug ignited gas engine.
Fourth, the power is strong. The HPDI engine maintains the same power and torque as the original diesel engine. Its power is exactly the same as that of the diesel engine. It is 20% higher than the spark plug ignition gas engine power and torque, which can solve the problem of insufficient ignition power of the ignition gas engine.
Mr. David De鄄mers, CEO of Westport Innovations, expressed enough confidence in the product: “China's natural gas resources are very rich. With the global conversion of vehicle fuels to natural gas, China's long-term energy planning and economic development will bring many opportunities for the use of natural gas. The application of HPDI engines will cater to the trend of market demand and promote the effective use of resources."
Fang Hongwei, CEO of Weichai Power Co., Ltd., cited data to prove the trend that natural gas will be widely used in the future. Relevant data show that in 2011, the global natural gas recoverable quantity was 191 trillion cubic meters, and China's conventional natural gas reserves were 56 trillion cubic meters. On the whole, China's natural gas reserves are abundant, and the development of natural gas vehicles has sufficient guarantees in terms of gas sources. Therefore, he believes: "Natural energy is the most realistic alternative energy source for petroleum. Natural gas technology is the development direction of heavy-duty new energy. The community has reached a consensus."
The widespread acceptance of the HPDI engine has won wide acclaim.
Li Wanli, deputy director of the Industrial Policy Department of the Ministry of Industry and Information Technology, gave a high evaluation: "The HPDI engine that was successfully developed and released on the market, with natural gas as the main fuel, is not only a green, environmentally friendly power product, but also good. Economic, dynamic, and reliable. It actively explores the development of energy conservation and new energy in China, and will certainly create greater value for users."
Dong Yang, secretary general of the China Association of Automobile Manufacturers, said that China now has the world's largest auto market, and the auto industry has become an important pillar industry for the national economy. However, while the automobile brings wealth and convenience to people, it also consumes a lot of resources and brings a series of environmental problems. How can the automobile industry take a low-carbon and environmentally-friendly road through technological advancement to achieve sustainable economic development? Is an important topic. As the heart of the car, the internal combustion engine is the most promising product for energy saving and emission reduction. "The advent of the HPDI engine has filled the gap in the application of domestic natural cylinder direct injection engines, which is an important advancement in China's engine technology." "Electric vehicle technology has far-reaching historical significance, and natural gas vehicle technology has great practical significance." Dong Yang also compared natural gas vehicle technology with electric vehicle technology.
Tan Xuguang, chairman of Weichai Power Co., Ltd. and chairman of China's internal combustion engine industry, first expressed his views from the perspective of the industry. He said that China's internal combustion engine industry has a lot to do with energy conservation and emission reduction, and it has a long way to go. In 2011, China's internal combustion engine industry produced 77 million sets of various power products, consuming 270 million tons of diesel fuel, gasoline and fuel, equivalent to the total amount of crude oil imported from China. China's crude oil dependence on foreign countries is relatively high, reaching 60%, while the total consumption of the internal combustion engine industry has reached 59.27%. If each of our power manufacturing companies can reduce energy consumption by 5% to 10% during the production process, it can save a considerable amount of crude oil imports. Now, the national energy conservation and emission reduction strategy puts higher demands on the internal combustion engine industry. Weichai, as one of the leading enterprises in China's engine manufacturing, should assume this responsibility.
In addition, Tan Xuguang also said, “Weichai Power produced 700,000 engines last year. We have to take such an opportunity to promote energy conservation, emission reduction and recycling economy, especially to pay more attention to the matching and application of OEMs. Experience the operational benefits of energy conservation and emission reduction, and let the society better understand the benefits of environmental protection." "Let the entire society and the government's functional departments care about or formulate a series of industrial policies to support the application and promotion of natural gas engines." This is probably the most hopeful place for Tan Xuguang.
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