动力制动

The barometric brake system is the most familiar power servo brake system.

气压动力制动是最常见的动力制动系统，多用于中重型汽车。

Based on the analysis of the influence to the testing result induced by the roller parameters, such as the diameter, attachment coefficient and locating angle, the thesis proves that, through construction of a mechanics model of the rig to calculate the biggest braking forcing which can be detected, the detectible braking force has a direct ratio with the roller attachment coefficient and a inverse ratio with the cosine of the locating angle.

在分析了汽车滚筒反力式制动检验台的滚筒直径、滚筒的附着系数及安置角对检测结果影响的基础上，通过建立力学模型计算汽车滚筒反力式制动检验台所能检测到的最大汽车制动力得出结论：汽车滚筒反力式制动检验台所能检测到的制动力与滚筒的附着系数成正比，与安置角的余弦成反比。

Based on the analyses of braking moment distribution between axles of some typical modern passenger cars, this paper analysed first the forces on car and wheels during braking, then summarized the design of pipeline pressure of brake system, the requirements of ECE13 regulation an braking torque of front and rear wheel brake, and the analyses of braking force distribution between axles.the analysing result of a certain car showed that this method of design is practicable and reasonable.this paper will be he...

在对典型现代轿车制动力矩分配进行考察和分析的基础上，本文从整车和车轮在制动过程中受力分析出发，对制动器管道压力的设计、ECE13法则对前后轮制动器制动力矩的要求、轴间制动力分配的验证和分析等方面进行了较为系统的归纳和总结。通过实例分析表明，本文所述的方法较为实用合理，它为汽车产品设计以及有关部门采用有效的制动力矩分配设计方法、保证良好的汽车制动性能提供了一定的依据和参考。

Braking system can be divided into human and braking systems, brake systems and power brake servo systems.

制动系统可分为人力制动系统、动力制动系统和伺服制动系统等。

Therefore, the power servo brake system has made a great developmentin the automobile.

因此，动力制动系统在汽车上得到了广泛的应用。

Simulation result shows that this method is simple and convenient, can directly reflect changing of important parameters in the braking process such as velocity, acceleration, braking distance, braking force, loading and adhesion power etc; It can avoid the overelaborate procedure of manual calculation and programming ,offer strong tools for study on the braking performance of car-trailer.

通过建立拖挂式房车制动过程的力学模型，并在MATLAB/SIMUUNK环境下搭建仿真模型，时拖挂式房车制动过程进行动态仿真，结果表明，该方法能简单、直观、便捷地反映拖挂式房车制动过程中的速度、加速厦、制动距离、制动力、载荷、附着力等参数的变化，避免了手工计算或编程的繁琐，为拖挂式房车制动性能的研究提供有力的工具。

Using natural braking power of engines saves on fuel economy.

使用发动机的自然制动力制动，提高燃油经济性。

The effects of engine braking and CVT speed ratio control on the braking performance of a hybrid electric vehicle are analyzed.A braking control strategy is proposed,in which regenerative braking is adopted for low braking intensity,the combination of regenerative braking and friction braking is used for high braking intensity,and the engine braking is also added for emergency braking.

分析了混合动力汽车制动过程中发动机反拖制动和CVT速比控制对车辆再生制动性能的影响，提出了低制动强度下仅由电机再生制动、高制动强度下电机与制动器共同制动和紧急制动时发动机参与制动的再生制动策略。

Aiming at this problem, firstly, calculation formulae of utilization adhesion coefficient after installment of retarder were detailedly deduced. Then braking force distribution ratio , braking intensity and vehicle full-load parameters were taken as variables and inequalities which are about of retarder braking force , braking force distribution ratio , braking intensity and vehicle full-load parameters were established based on the ECE Law. The range of corresponding to any , as well as the most optimal matching between them, were obtained by solving these inequalities.

为此，论文在推导了安装缓速器后前、后轴利用附着系数、的计算公式基础上，基于ECE法规要求，以制动力分配比、制动强度及车辆满载参数为变量，建立了缓速器制动力关于车辆制动力分配比、制动强度和满载参数之间的多元不等式组，通过求解多元不等式组获得缓速器制动力与制动力分配比之间的取值关系，并从中得到二者之间的最优匹配。

Because the automobile applies the brake the braking force which needs to be quite big, and is quite frequent, therefore the automobile applies the brake mainly to use the air compressor and the hydraulic pump energizes, the corresponding braking system respectively is the barometric pressure braking system and the hydraulic brake system; The human body mechanical energy mainly uses in the passenger vehicle in the vehicle arresting gear, the driver draws the hand brake lever or steps on presses the foot pedal dive flap, carries on effectively through the steel wire after the wheel applies the brake in the vehicle, prevents the vehicles stop when the landslide or slides moves.

由于汽车制动所需的制动力比较大且比较频繁，所以汽车制动主要采用空气压缩机和液压泵供能，对应的制动系统分别是气压制动系统和液压制动系统；人体机械能则主要用于轿车的驻车制动装置，驾驶者拉动手制动杆或踩压脚踏制动板，通过钢索对后车轮进行有效的驻车制动，以防止车辆停车时滑坡或溜动。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。