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由南昌气缸垫厂研制的4J系列全金属叠层钢片式气缸垫,于4月26日在南昌市通过了由江西省机械厅和南昌市科委主持的技术鉴定。4J系列即4JA1和4JB1(国内称493Q),为日本五十铃N系列轻型车发动机。该发动机为直列4缸直喷式柴油机,各项指标在国际上处于先进地位,八十年代后期我国一些厂家引进该车技术,九十年代将成为我国轻型柴油车主导发动机。4JA1和4JB1柴油机的气缸垫是通用的。该气缸垫用五层钢片相叠而成,称为叠层钢片式。在国际上正处于发展趋势,在国内为填补空白项目,为气缸垫行业开创了一种新的结构形式。为适应我国汽车工业的发展需要。南昌气缸垫厂经过近三年的努力,克服种种困难,采用高新技术研制生产出具有国际先进水平的,密封可靠的4J系列气缸
The 4J series all-metal laminated steel plate cylinder head gaskets developed by the Nanchang cylinder gasket factory passed the technical appraisal presided over by the Machinery Bureau of Jiangxi Province and the Science Committee of Nanchang City in Nanchang City on April 26th. The 4J series, namely 4JA1 and 4JB1 (known domestically as 493Q), is the Japanese Isuzu N series light vehicle engine. The engine is an in-line 4-cylinder direct-injection diesel engine. Each index is in an advanced position in the world. In the late 1980s, some manufacturers in China introduced the vehicle technology. In the 1990s, it will become the leading engine of China’s light-duty diesel vehicles. The cylinder heads of the 4JA1 and 4JB1 diesel engines are universal. The cylinder mat is made by laminating five steel sheets and is called laminated steel sheet type. In the international arena is in the development trend, in order to fill the gaps in the country, for the cylinder pad industry has created a new structure. To meet the development needs of China’s auto industry. After nearly three years of hard work, Nanchang Cylinder Pad Plant has overcome various difficulties and adopted high-tech to develop and produce internationally advanced, sealed and reliable 4J series cylinders.