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In order to adapt to the market trend that natural gas buses are increasingly becoming an important component of the development of national passenger vehicle fuels, Yuchai, as a leader in the Chinese engine industry, continues to be at the forefront of innovation and is committed to building professional natural gas engines to meet market needs.
In 2012, the Yuchai Gas Power Customer Exchange Conference was held on August 12 in the cool city of Guiyang. 150 representatives of users from various provinces and cities across the country, as well as leaders of ministries and commissions, attended the conference.
At the meeting, deputy general manager of Yuchai Wang Limin made a warm speech. Yuchai Zhong Yuwei deputy general manager explained the advantages and performance of Yuchai in the natural gas passenger car market; Professor Zhuo Bin, senior technical consultant of Yuchai, deeply analyzed Yuchai Natural gas engine technology and product advantages. The conference also invited Guiyang Bus, a leading company in the nation's natural gas transportation promotion, to introduce the experience of the promotion and use of natural gas buses. Yang Lihui, a bus industry expert, was invited to give a special report on the natural gas bus market to analyze the needs of the natural gas market. The conference was widely praised by the participants.
In the era of NG commercial vehicles in China, the natural gas abbreviation NG (natural gas) is opened, and is divided into CNG and LNG in different forms. Both types of gas sources can be used as energy for automobile operation. The two gases are significantly different from each other in terms of convenience of transport and vehicle continued driving, resulting in corresponding The adaptability of dynamic automotive products is also different.
In order to promote the construction of a low-carbon transportation system, since 2004, national and local governments at all levels have issued various policies to explicitly promote and promote the widespread use of NG vehicles. With the introduction of LNG foreign gas sources, the 20-year rule of “paying due attention†guarantees the needs of downstream users, and at the same time prompts the Big Three oil companies to give various preferential policies for the promotion of LNG vehicles. The multi-force synergy push-pull accelerated the popularization of NG vehicles. The national gas source construction has been increasingly improved: 1. The implementation of the national energy strategy, the West-East Gas Pipeline, the North-South-North-South-North, and the Air-Sea Landing and other projects have been implemented one after another. 2. According to incomplete statistics, there are currently nearly 2,500 CNG filling stations in China. 3. By the end of 2011, China had more than 200 LNG fixed filling stations and over 300 dressing stations.
The popularization of NG vehicles requires a variety of basic support: the popularization of gas sources, policy support, and power improvement are the material basis for the development of NG vehicles. Compared with the high efficiency of diesel, it is the driving force for the development of NG vehicles, and the widespread market is popularized as NG vehicles. The development brought a lot of experience, five basic support, and the era of NG power.
Relying on Yuchai’s strong product research and development capabilities and its dedication and passion for the engine business, the leader in professional achievement excellence has achieved superior performance of Yuchai’s gas engines.
1. The earliest time for product R&D: Yuchai started gas engine R&D in 1995, successfully supported it in batches in 1998, entered the market in large quantities in 2000, and used the most abundant market data, forming closed-loop support for experiments and R&D.
2. Yuchai has a number of technological advances, including single-point injection and lean-burn technology. As the core representative of Yuchai's NG technology, it greatly optimizes power performance and fuel economy.
1) The fourth-generation electronically controlled single-point gas injection method controls the gas volume, and the accuracy of the air-fuel ratio control is higher, thereby ensuring good power performance. At the same time, the discharge capacity can reach the country V. The reliability of the system components is high and maintenance is convenient.
2) The lean burn excess air coefficient is in the range of 1.1-1.5, which makes Yuchai gas engine achieve a high compression ratio of 12:1, which greatly improves the economic performance of the product. At the same time, according to the dynamic conditions of the vehicle at any time to provide the most appropriate air-fuel ratio, to promote combustion as fully as possible, reduce fuel consumption, to ensure that fuel-efficient.
3. The use of a large number of special parts greatly improves the product stability under high temperature combustion.
Yuchai NG engine parts:
Special fuel control system, imported high-reliability natural gas nozzle;
Special valve camshaft optimization, long life NGK sheet metal spark plug, imported ignition coil;
Special supercharger anti-surge high temperature and low inertia;
Special inlet pipe, life-long maintenance free piston type high pressure reducer;
Special valves and seats are high temperature resistant and wear resistant;
Special piston strength, skirt piston ring;
Most of the other key components use Bosch parts and have good reliability.
4. The highest market share: 41.7%, ranking first in the industry. Good reputation and excellent performance contributed to the outstanding performance of Yuchai's NG engine market. In 2011, it basically monopolized the LNG passenger car market.