一、油环的现状和新产品开发 目前柴油机活塞环在气缸内的排列,一般是二片气环和一片油环,或三片气环和一片油环组成,其油环均为内撑油环,由铸铁本体及内撑螺旋弹簧组成(见图1)。 为降低能耗,要求发动机有低的燃油耗、润滑油耗和高安全性能。为增强市场竞争能力,要求降低发动机的制造成本。近几年来,对油环讲杆了以下改革: First, the current status of oil rings and the development of new products Diesel piston rings in the current arrangement of the cylinder, usually two gas rings and a oil ring, or three gas rings and a ring composition, the oil ring are supported oil Ring, the cast iron body and the internal support coil spring composition (see Figure 1). In order to reduce energy consumption, the engine requires low fuel consumption, lubricating oil consumption and high safety performance. In order to enhance the market competitiveness, it is required to reduce the manufacturing cost of the engine. In recent years, the following reforms have been made to the oil ring: