小型混凝土攪拌車的發(fā)動機在熄火時，通常是借助排氣制動系統(tǒng)完成的。當需要對發(fā)動機進行熄火操作時，如果駕駛員按照正常熄火方式不能達到熄火的目的主要可能是由于排氣制動閥管線破裂、排氣制動蝶閥動力缸故障、排氣制動蝶閥與動力缸的聯(lián)動結構松脫及油門線卡住等原因造成的。

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.

其具體的檢測維修如下：

The specific inspection and maintenance are as follows:

（1）在駕駛員進行正常操作的情況下，無法完成發(fā)動機的熄火操作時，首先需要對按鈕閥及停油缸進行檢查，如果確定按鈕閥失效或者停油缸發(fā)生故障，應及時對按鈕閥的線路進行檢查并進行更換，同時對停油缸進行維修。

(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）檢查排氣制動蝶閥，確認排氣蝶閥與動力缸之間的聯(lián)動結構是否存在松脫現(xiàn)象，如果確認聯(lián)動結構存在松脫現(xiàn)象，需及時進行緊固，如果聯(lián)動結構損壞，應及時進行更換。

(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）檢查油門線是否存在被卡死的現(xiàn)象，如果油門線被卡死會造成持續(xù)供油的情況，應對油門線結構進行拆卸檢查，排除被卡死的原因，并更換新的油門線。

(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，在車輛行駛的過程中，如果駕駛員不充分利用排氣制動進行減速，而是長期利用行車制動對車速進行控制，容易使制動蹄片與制動轂發(fā)生經常性的摩擦，引起制動鼓發(fā)熱量異常，降低制動效果。

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.

針對小型混凝土攪拌車的制動故障，首先可以通過釋放制動踏板，如果制動踏板回位緩慢，則有可能是制動閥排氣緩慢造成的，如果制動踏板完全釋放之后，仍然存在制動效果，則說明個別輪胎存在制動拖滯。您對此有怎樣的問題就來我們網站http://www.mothernature2u.com進行咨詢吧！

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.mothernature2u.com Consult!