Shishi city famous with its clothes industry is located between the cultural and historical city of Quanzhou and Xiamen Special Economic Zone on the southeast coast of China . It is the Chinese textile and clothes production base and distribution center. This mid-sized developed city has a highly developed public transport system. Currently, its urban public transport system mainly uses 8 meters and below buses while its rural public transport network mainly use 6-7 meter buses.  

50 of the 122 buses used Yuchai engines. Our first group of State III buses all use Yuchai engines, chief of the transportation department of Shishi public transport authority Lin expressed his favor to Yuchai engine. All the newly 34 buses purchased this year are Kingdragon KLQ 6800G assembled with Yuchai YC 4G 180-30 engines. At the stage of State II, Shishi public transport system mainly used engines produced by another maker. Those engines had a number of quality problems. During the transition of State II to State III, after checking the high maintenance costs of the previous engine brand, the city government put Yuchai as the first choice and staged public biddings to introduce buses equipped with Yuchai State III engines.

Of the 11 buses assembled with Yuchai 4110 engines that we bought in 2005, the fuel consumption averaged as low as 16L /100 kilometers with reliable quality and stability, The chief of the department said. The after-sales service of Yuchai is in place and on time. Whenever there is a problem failure, the personnel of Yuchai service station will be there in 1~ 2 hours to solve the problem. Shishi public transport authority favored Yuchai engines in purchasing new buses.  

The specialty of the public transport system determines that the subsidy from the government is a large part of its funding. The decline of the operation cost will increase the revenue of the transportation under the same funding. Since the cost of fuel is about 30% of the total costs, the control on the fuel will be  significant in improve the business performance. With high emphasis was put on the drivers fuel saving training, Shishi transport system offered standard driving materials to drivers and evaluated  the fuel consumption that contribute to the fuel saving. Lin showed was highly satisfied the low costs of the newly purchased 34 new buses. Their fuel consumption is still below 20.5L /100 kilometers even with the frequent stop and full load condition.

Due to the state stimulus policy of the public transport first, the purchasing power of buses for public transport shifted from large cities to the 2^nd and 3^rd tier cities. The vehicle models changes from 10.5 m and above large size buses to 8-9 meter medium size buses. The YC 4G State III engine is targeted the 8-9 meter bus that is used on urban roads. Its four-valve technology and the low rotate speed range designed in accordance with the driving speed of urban public transport effectively reduce the fuel costs. The low speed and high torque design substantively meet power demands in the frequent start ups and full load transport. The dual-balance shaft evidently improves the comfort of the whole bus. The amount of YC 4G State III engines in the market surpasses 10,000. The achievement of Yuchai in the Shishi public transport mirrors a small part of Yuchais accomplishment nationwide.  

To design and develop engines according to the specific demands in varied market divisions constitute the magic weapon of Yuchai to compete. It also shows the mission of Yuchai to meet the public demand for power with excellence and the leading spirit.  

Author: Lin Benyao