开源和节约是解决能源问题的两条途径。近年来,我省内燃机在发展品种中,在大部份产品原设计的基础上进行了强化变型,各企业分别采用废气涡轮增压、扩大缸径、提高转速、加大行程等强化措施(见下表),来扩大产品使用范围。企业对老产品进行强化,不仅能提高老产品的技术水平,增加产品的 Open source and conservation are two ways to solve the energy problem. In recent years, the province’s internal combustion engine in the development of varieties, most of the original design of the product on the basis of the enhanced variant, the companies were using exhaust gas turbocharger, expanding bore, increase speed, increase travel and other strengthening measures (see Table), to expand the product range. Enterprises to strengthen the old products, not only can improve the technological level of old products, increase product