Running in is also called running in. The running in period of concrete mixer truck refers to the initial driving stage after a new car or overhaul, which is generally 1000 ~ 1500 km, which is the basic mileage to ensure full contact, friction, adaptation and finalization of the machine parts. During this period, the ability of each part of the concrete mixer truck to adapt to the environment can be adjusted and improved, and the bumps on the parts can be grinded off. The running in quality of concrete mixer truck will have an important impact on its life, safety and economy.

出廠后的新攪拌車，雖然已經進行過磨合，但是零件的表面依然較粗糙。另外在加工、裝配時存在一定的偏差和一些很難發現的隱患。另外，新零件與配件間，有很多金屬粒脫落，這些金屬粒不僅使零件間的磨損加劇，而且落入機油后還會使機油的質量下降，影響了潤滑的效果。由于新的零件在運行時摩擦阻力比正常時期大，所以油耗也會比較高。

Although the new mixer truck has been run in, the surface of the parts is still rough. In addition, there are some deviations and hidden dangers in the process of processing and assembly. In addition, a lot of metal particles fall off between new parts and accessories. These metal particles not only aggravate the wear between parts, but also reduce the quality of engine oil after falling into the engine oil, which affects the lubrication effect. Because the friction resistance of the new parts is larger than that in normal period, the fuel consumption will also be higher.

新購攪拌車磨合期需要了解的基本常識

Basic knowledge of newly purchased mixer during running in period

二、新購攪拌車如何度過磨合期

2、 How to get through the running in period of newly purchased mixer

1、磨合過程：混凝土攪拌車的磨合里程為1000－2500，進口車的磨合期則更長一些，多數為1500－3000。磨合期分為三個階段。行駛里程100時為磨合初期，200時為初磨合程度，3000就可磨合形成氧化膜。

1. Running in process: the running in mileage of concrete mixer truck is 1000-2500 km, while that of imported truck is longer, mostly 1500-3000 km. The running in period is divided into three stages. The running in degree is 3000 km at the first 200 km.

2、行駛速度：磨合期內應盡量低速行駛。一般情況下，載重混凝土攪拌車車速不宜超過45/小時，混凝土攪拌車的車速應在50－80/小時以內。同時，在起步前不要讓發動機怠速運轉太長時間，30秒左右即可起步。初駛期300以內應避免緊急制動。

2. Driving speed: drive at a low speed as far as possible during the running in period. In general, the maximum speed of truck mixer should not exceed 45 km / h, and the maximum speed of truck mixer should be within 50-80 km / h. At the same time, do not let the engine idle for too long time before starting, and start in about 30 seconds. Emergency braking should be avoided within 300 km of the initial driving period.

新購攪拌車磨合期需要了解的基本常識

Basic knowledge of newly purchased mixer during running in period

三、新購攪拌車磨合期內的駕駛規定

3、 Driving regulations of newly purchased mixer during running in period

1、新購攪拌車保持起步平穩，避免猛踩油門，且不要使發動機轉速過高。

1. The newly purchased mixer should keep a smooth start, avoid stepping on the accelerator and don't make the engine speed too high.

2、新購攪拌車起步前，水溫應達到50℃以上。以低擋起步，1以后換入高擋，行車中水溫應控制在80℃－90℃。

2. Before starting the new mixer, the water temperature should be above 50 ℃. Start at low gear and shift to high gear 1 km later. The water temperature should be controlled between 80 ℃ and 90 ℃.

3、新購攪拌車行進中及時換擋，不要長時間使用一個擋位，也不能使用高速擋低速行駛或使用低速擋高速行駛。

3. Don't use a new gear when driving at high speed or low speed.