导致沃尔沃发动机性能降低的原因是什么？实际上原因有发动机保养不及时、机油变质、机油滤芯不畅等。下面
济南沃尔沃汽车养护人员来进行相关的介绍：
What are the causes of the performance degradation of Volvo engines? In fact, the reasons are that the engine maintenance is not timely, the oil is deteriorated, and the oil filter element is not smooth. Next, maintenance personnel of Volvo Cars in Jinan will make relevant introduction:
汽车发动机是为汽车提供动力的装置，是汽车的心脏，决定着汽车的动力性、经济性、稳定性和性。根据动力来源的不同，汽车发动机可分为柴油机、汽油机、电动车电机和混合动力。
The automobile engine is the device that provides power for the automobile and the heart of the automobile. It determines the power, economy, stability and environmental protection of the automobile. According to different power sources, automobile engines can be divided into diesel engines, gasoline engines, electric vehicle motors and hybrid power.
汽车发动机的结构：发动机由曲柄连杆机构和配气机构两大机构，冷却、润滑、点火、供油、起动系统等五大系统组成。主要部件有缸体、缸盖、活塞、活塞销、连杆、曲轴、飞轮等。
Structure of automobile engine: the engine is composed of two mechanisms: crank linkage mechanism and valve train mechanism, and five systems including cooling, lubrication, ignition, oil supply and starting system. The main components are cylinder block, cylinder head, piston, piston pin, connecting rod, crankshaft, flywheel, etc.
发动机舱里面有个粗壮的涡轮管，和节气门管，右前轮下方还有个涡轮增压器泄压皮管。这几个地方要检查管道是否脱落或松动，如果是就会导致漏气，进而引起发动机进排气异常，发动机限扭，终导致发动机性能下降。解决办法就是目视检查以上部位，松脱时要及时紧固。
There is a sturdy turbine pipe and throttle pipe in the engine compartment, and there is a turbocharger pressure relief hose under the right front wheel. In these places, check whether the pipes fall off or become loose. If so, it will lead to air leakage, which will lead to abnormal intake and exhaust of the engine, and the engine torque will be limited, which will eventually lead to the decline of the engine performance. The solution is to visually inspect the above parts and fasten them in time when they are loose.
如果油轨出现异常，就会导致喷油压力不够，发动机异常燃烧，空燃比失效，加速无力，进而发动机性能下降，此时需要使用诊断仪连入车载OBD诊断口，看看后台数据，如果指向高压油轨信号，那就是油轨问题，需要更换。
If the fuel rail is abnormal, the fuel injection pressure will be insufficient, the engine will burn abnormally, the air-fuel ratio will fail, the acceleration will be weak, and the engine performance will decline. At this time, the diagnostic instrument needs to be connected to the on-board OBD diagnostic port to check the background data. If it points to the high-pressure fuel rail signal, it is the fuel rail problem, and it needs to be replaced.
此外一般来说，沃尔沃汽车保养的常规项目主要有机油、机油滤芯器、空气滤清器以及发动机的保养，车主消费者可以参考上述的周期，对这些常规项目进行定期保养。
In addition, in general, the routine maintenance items of Volvo Cars mainly include the maintenance of oil, oil filter element, air filter and engine. Owners and consumers can refer to the above cycle for regular maintenance of these routine items.
In addition, during daily driving, attention should be paid to keeping the car body and interior environment clean. At the same time, Volvo Cars' tire surface and pressure, oil level, cooling water level and brake oil level should be checked frequently. Come to our website for more information http://www.lutongqixiu.com Consult and understand!
