小型混凝土搅拌车的发动机在熄火时，通常是借助排气制动系统完成的。当需要对发动机进行熄火操作时，如果驾驶员按照正常熄火方式不能达到熄火的目的主要可能是由于排气制动阀管线破裂、排气制动蝶阀动力缸故障、排气制动蝶阀与动力缸的联动结构松脱及油门线卡住等原因造成的。
When the engine of small concrete mixer stops, it is usually completed with the help of exhaust braking system. When it is necessary to shut down the engine, if the driver fails to shut down the engine in the normal way, it may be mainly caused by the rupture of the exhaust brake valve pipeline, the failure of the exhaust brake butterfly valve power cylinder, the loose linkage structure between the exhaust brake butterfly valve and the power cylinder, and the jamming of the oil valve line.
其具体的检测维修如下：
The specific inspection and maintenance are as follows:
（1）在驾驶员进行正常操作的情况下，无法完成发动机的熄火操作时，需要对按钮阀及停油缸进行检查，如果确定按钮阀失效或者停油缸发生故障，应及时对按钮阀的线路进行检查并进行更换，同时对停油缸进行维修。
(1) When the driver is unable to complete the engine flameout operation under normal operation, it is necessary to check the button valve and the stop cylinder first. If it is determined that the button valve fails or the stop cylinder fails, the circuit of the button valve should be checked and replaced in time, and the stop cylinder should be repaired at the same time.
（2）检查排气制动蝶阀，确认排气蝶阀与动力缸之间的联动结构是否存在松脱现象，如果确认联动结构存在松脱现象，需及时进行紧固，如果联动结构损坏，应及时进行更换。
(2) Check the exhaust brake butterfly valve and confirm whether the linkage structure between the exhaust butterfly valve and the power cylinder is loose. If the linkage structure is loose, tighten it in time. If the linkage structure is damaged, replace it in time.
（3）检查油门线是否存在被卡死的现象，如果油门线被卡死会造成持续供油的情况，应对油门线结构进行拆卸检查，排除被卡死的原因，并更换新的油门线。
(3) Check whether the throttle wire is stuck. If the throttle wire is stuck, it will cause continuous fuel supply. The throttle wire structure should be disassembled and inspected to eliminate the cause of the stuck, and replace the throttle wire with a new one.
另外，在车辆行驶的过程中，如果驾驶员不充分利用排气制动进行减速，而是长期利用行车制动对车速进行控制，容易使制动蹄片与制动毂发生经常性的摩擦，引起制动鼓发热量异常，降低制动效果。
In addition, in the process of vehicle driving, if the driver does not make full use of the exhaust brake to slow down, but uses the service brake to control the speed for a long time, it is easy to cause frequent friction between the brake shoe and the brake hub, causing abnormal heat generation of the brake drum, and reducing the braking effect.
针对小型混凝土搅拌车的制动故障，可以通过释放制动踏板，如果制动踏板回位缓慢，则有可能是制动阀排气缓慢造成的，如果制动踏板完全释放之后，仍然存在制动效果，则说明个别轮胎存在制动拖滞。您对此有怎样的问题就来我们网站http://www.zkzdsljbc.com进行咨询吧！
For the brake failure of small concrete mixer, first of all, release the brake pedal. If the brake pedal returns slowly, it may be caused by the slow exhaust of the brake valve. If the brake pedal is fully released, the brake effect still exists, it means that there is brake drag on individual tires. If you have any questions about this, please come to our website http://www.zkzdsljbc.com Consult!
