The fuel consumption of recently made automobile engines has been remarkably improved as compared with the fuel consumption of engines manufactured 10 years ago. The persistent challenge of car makers resulted in remarkable improvements of both the level of noise and livability and the appearance of advanced engines and automobiles. Also, the tension of piston rings, which exerts a strong influence on fuel consumption, has been significantly reduced. Ten years ago, the total tension divided by the cylinder diameter was 0.65 N/mm. The parameter has been reduced by more than a half the previous level in engines developed quite recently, to about 0.3 N/mm. A possibility of achieving such low tensions made it possible to develop the technology of oil consumption reduction. Figure 1 shows the relationship between the piston speed and the oil consumption for gasoline engines in 10 years, from 1993 to 2003. Despite a decrease in the tension, oil consumption has been reduced as a result of implementing different devices.
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机译：与10年前制造的发动机的燃料消耗相比，最近制造的汽车发动机的燃料消耗已显着改善。汽车制造商的持续挑战导致噪音和宜居性水平以及高级发动机和汽车的外观得到了显着改善。同样，对燃料消耗产生很大影响的活塞环的张力也已大大降低。十年前，总张力除以圆柱直径为0.65 N / mm。在最近开发的发动机中，该参数已比以前降低了一半以上，降至约0.3 N / mm。获得如此低的张力的可能性使得开发降低油耗的技术成为可能。图1显示了从1993年到2003年的10年间，活塞速度与汽油发动机机油消耗之间的关系。尽管张力有所减小，但由于采用了不同的装置，机油消耗有所减少。
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