導致沃爾沃發動機性能降低的原因是什么？實際上原因有發動機保養不及時、機油變質、機油濾芯不暢等。下面濟南沃爾沃汽車養護人員來進行相關的介紹：

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:

汽車發動機是為汽車提供動力的裝置，是汽車的心臟，決定著汽車的動力性、經濟性、穩定性和環保性。根據動力來源的不同，汽車發動機可分為柴油機、汽油機、電動車電機和混合動力。

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.

汽車發動機的結構：發動機由曲柄連桿機構和配氣機構兩大機構，冷卻、潤滑、點火、供油、起動系統等五大系統組成。主要部件有缸體、缸蓋、活塞、活塞銷、連桿、曲軸、飛輪等。

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.

發動機艙里面有個粗壯的渦輪管，和節氣門管，右前輪下方還有個渦輪增壓器泄壓皮管。這幾個地方要檢查管道是否脫落或松動，如果是就會導致漏氣，進而引起發動機進排氣異常，發動機限扭，終導致發動機性能下降。解決辦法就是目視檢查以上部位，松脫時要及時緊固。

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.

如果油軌出現異常，就會導致噴油壓力不夠，發動機異常燃燒，空燃比失效，加速無力，進而發動機性能下降，此時需要使用診斷儀連入車載OBD診斷口，看看后臺數據，如果指向高壓油軌信號，那就是油軌問題，需要更換。

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.

此外一般來說，沃爾沃汽車保養的常規項目主要有機油、機油濾芯器、空氣濾清器以及發動機的保養，車主消費者可以參考上述的周期，對這些常規項目進行定期保養。

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.

另外，在日常駕車過程中，要注意保持車身以及車內環境的整潔，同時，經常檢查沃爾沃汽車的輪胎表面和氣壓、機油尺度、冷卻水位和剎車油位。更多相關事項就來我們網站http://www.cnjqf.com進行咨詢了解吧！

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.cnjqf.com Consult and understand!