From the Technical Center of Changchai Co., Ltd., it was learned that the company's four-family diesel engine passed the 2011 US EPA emission conformity certification, including 4 models of new EV80 diesel engines and 7 models of 3M78 diesel engines. In addition, many models including the 4L40 with prototypes 495 and 490B, and models including the 3LS30 with the ZN390T as the prototype also passed the US EPA certification this time.
In recent years, Changchai Company has continuously deepened its product structure adjustment. Each R&D project team of the company's technology center has actively promoted in multi-cylinder, single-cylinder diesel engines, gasoline engines, and units in accordance with the requirements of the company's policy and objectives. The feedback information of two foreign markets, the establishment of new projects, development of a corresponding development schedule for each project, has made active efforts for the smooth progress of the company's new products, especially in the development and testing of EV80, 3M78, Various departments of the company have made a lot of efforts for this purpose.
Both of these products were developed in 2008. The EV80 was tested for emissions at the end of October 2008. In order to improve the reliability of the products, the technology center conducted several tests on the EV80. The reporter learned from a technician. From the work notes, in the year from 2009 to 2010, more than twenty rounds of test data and improved solutions were recorded in detail on the notebook. Each test result provided the next improvement. The important basis.
Since 2011, the focus has been on further working on the reliability of related major parts. After cooperation with related suppliers, the improved parts have passed the full-load assessment at full speed of 1,000 hours and are handed over to the workshop for small batch production. The problems arising are promptly improved. At present, the workshop production has been relatively smooth and stable. EV80 diesel engine has been promoted by the sales company and overseas business departments, and has now been used with more than 20 manufacturers and generators, refrigerated trucks, water pumps, elevators, etc. The supporting work, and is working hard to carry out the preparatory communication work with the rice transplanter, multi-functional pastoral management machine, lawn mower matching, EV80 diesel engine is also one of the company's profitable varieties, has now filed five patents.
3M78 is mainly used for generator sets in the field of shipbuilding and other fields. Since the design and R&D began in 2008, it has been supplied with more than 10 companies at home and abroad, and the company has also provided 3M78 diesel engine with cams. The improved design of the cylinder head and the development of the supercharged 3M78 diesel engine spare no effort. At present, the third round of turbocharger improvement tests are being carried out so that the overall performance can reach the final design requirements.
In the process of certification, Changchai Company has made particulate matter tests for each of the several source families according to EPA's new requirements, and measured CO2 at each operating condition. All new additional test procedures are in compliance with the EPA. Regulations. According to the relevant person in charge of the technical center, according to the requirements of the US emission regulations, 25-75 HP non-road engines will implement new standards in 2013, and the particle limit is only one-tenth of the current stage, so the company in the future In the first phase, it will strive to take time to increase development efforts, especially the improvement and development of the common rail fuel system. For this purpose, the company has communicated with relevant partners.
In addition, Changchai has also made active efforts in the EU emission certification. In the first half of the year, detailed analysis was conducted on the production consistency of the EU-certified diesel engines produced in batches on the workshop, and the minimum and maximum allowable values ​​of some parameters were tested and certified. The key parameters are optimized.
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