Dalian Jinguo Locomotive Parts Co., Ltd. (short as “DLJG”) was established on 1992. Since the day one, it has been continuously concentrating on the manufacturing of middle speed diesel engine connecting rod for 30 years.Facing the opportunities and challenges in the new century, the innovative DLJG actively adapts itself to the development demand of economic globalization, extends its market exploration, technical innovation, and customer service not only to the locomotive engine, but also the marine engine and compressor for Oil & Gas sector. Our plant is located in Dalian YCZ Industrial zone. The occupation is over 8000 m2, with fixed assets of 30 million yuan. Our connecting rod manufacturing capability covers all major model engines from 160 to 320mm in terms of bore diameter. The annual output capacity is over 10000 sets for medium speed diesel engines. DLJG has a history of maintaining excellent relations with customers based on superior quality and performance of our various engine connecting rods.
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Jinguo production workshop and production equipment, as early as 1995, the company became the diesel engine connecting rod professional supporting enterprises selected by CRRC and China Railway Corporation, for CRRC Dalian, CRRC Changzhou and more than ten railway bureaux and railway companies throughout the country supply various types of products.
Introduction to large natural gas compressor: As a common compressor equipment in natural gas production process, large natural gas compressor has higher exhaust pressure and flow than ordinary natural gas compressor.
The fracture of connecting rod bolt of diesel engine in operation will lead to serious cylinder tamping accident, which will not only cause the damage of cylinder head and cylinder liner, but also cause the deformation and bending of connecting rod, and even cause great economic losses such as tamping body and breaking crankshaft.
The piston connecting rod group is the transmission part of the engine. It transmits the pressure generated by combustion gas to the crankshaft, which rotates and outputs power. Piston connecting rod group is mainly composed of piston, piston ring, piston pin and connecting rod.
Diesel engine connecting rod crankshaft journal and connecting rod between the big end of the installation of sliding bearings, because its shape like tiles, so called connecting rod bearing. The gap between the connecting rod crankshaft journal and the connecting rod bearing is fit, so that when the crankshaft rotates, the oil can form an oil film on the friction surface, thus reducing the friction and wear of the crankshaft journal.
The common damage of the connecting rod bearing of diesel engine is mainly the damage of the wear resistant alloy layer on the bearing bush. The main damage forms are: early wear and burning, corrosion, abrasion, fatigue crack and peeling, etc. In order to take effective preventive measures to reduce the occurrence of connecting rod bearing bush damage, the following analysis is made on the causes of the damage of connecting rod bearing bush.
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