Zhongke concrete mixer is a series of engineering vehicles. We all know that the working environment and driving conditions of the mixer are not very good, so it is necessary to be very strict with the braking requirements of the mixer. Here are several braking modes for hybrid vehicles.

1.排气蝶阀制动。

1. Exhaust butterfly valve brake.

蝶阀制动的原理和结构也相对简单。司机使用蝶阀制动后,蝶阀旋转块排气管和形式可控发动机汽缸的背压,以增加发动机的功率消耗排气冲程发动机减少的速度和力量,从而达到在短时间内减少速度的目标。排气蝶阀结构相对简单，性价比高，制动效果。

The principle and structure of butterfly valve braking are also relatively simple. After the driver uses the butterfly valve for braking, the butterfly valve rotating block, exhaust pipe and form can control the back pressure of the engine cylinder, so as to increase the power consumption of the engine, exhaust stroke and reduce the speed and force of the engine, so as to achieve the goal of reducing the speed in a short time. The exhaust butterfly valve has relatively simple structure, high cost performance and good braking effect.

2.放气制动。

2. Bleed the brake.

市场上也有许多产品用于泄气的发动机制动。放气制动工作时，打开排气阀，间隙小，使发动机在压缩行程时通过放气释放压缩。以这种方式，几乎没有返回到活塞在动力冲程。在排气过程中，排气行程依靠排气蝶阀或VGT涡轮增压器产生的背压来增加进排气功率消耗。根据实施方式的不同，可以分为主动和被动两种。

There are also many products on the market for deflated engine braking. When the bleeding brake works, open the exhaust valve with small clearance to release the compression through bleeding during the compression stroke of the engine. In this way, there is little return to the piston during the power stroke. During the exhaust process, the exhaust stroke depends on the back pressure generated by the exhaust butterfly valve or VGT turbocharger to increase the intake and exhaust power consumption. According to different embodiments, it can be divided into active and passive.

3.压缩制动。

3. Compression braking.

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