Oily pressure

The functions of fuel pressure damper system of diesel engine and its operation method are introduced as well as its air loop and electric loop.

介绍了柴油机燃油压力阻尼系统的功能和使用方法以及阻尼系统的空气回路和电气回路,分析了阻尼装置中探测器的工作原理、再充装置的工作原理及充气过程以及柴油机停机后重新起动和运行中应注意的问题。

The fuel pressure control system for diesel engine should have high accuracy and quick response,but the traditional method is insufficient to fulfill its increasing requirement.

柴油机的燃油压力控制系统具有控制精度高、响应速度快等特点,传统控制方法难以满足其不断提高的需要,所以,提出利用非均匀分布隶属函数的改进模糊控制方法来实现对燃油系统的快速、精确控制。

In order to meet the demands of flexible control of fuel injection quantity and fuel injection pressure for electronically controlled pressure accumulation fuel injection system of diesel engines, it is necessary to control the common rail fuel pressure accurately and on real time.

为了对柴油机电控蓄压式喷油系统的共轨燃油压力进行准确、实时的控制,满足喷油量和喷油压力柔性控制的需要,采用电液比例溢流阀作为共轨燃油压力调节器,从而实现对共轨燃油压力电子控制;基于MC68HC11系列单片机,设计并应用了共轨燃油压力模糊PID控制器,从而实现对共轨燃油压力的闭环控制。

The oil pressure being too low is the main cause of the engine′s burning out The traditional inspection device of oil pressure is not able to protect the engine A safety protection plug of engine oil pressure described in this paper can aut matically protect the engine by inspecting the pressure with a limiting valve in the main oil passag

机油压力过低是造成发动机烧毁的主要原因。

The problem of burning away the bearing 272F gasoline engine with lower oil pressure is analysed in this paper.

分析了 2 72F汽油机在工作中存在的因机油压力降低发生烧瓦的问题 ,通过增设低油压安全保护装置 ,达到在机油压力低于标准下限时机器自动停机的目的。

The reliability of the MEMS oil pressure sensors used to measure oil pressure of automotive engine was researched.

分析和实验结果表明,机油压力传感器封装材料及各个工艺步骤都会影响传感器的性能和可靠性。

Based on the principle of limited oil pressure at idle condition for an aeroengine,the influence of various factors of oil pressure in the oil system were analyzed,and the oil supply and leakage of the main oil pump were calculated.

根据某型发动机在慢车状态下滑油压力受限的原理,对滑油系统中影响滑油压力的各因素进行了分析,并对发动机主滑油泵的供油和泄漏等进行了计算;根据试验结果,提出了在使用国产4050滑油时发生的滑油压力低于限制值故障的排除措施。

The photos of spray and combustion process were acquired by this unit under different injection pressures and combustion chamber shapes.

在该试验装置上,分别对25MPa和18MPa的喷油压力下以及62mm圆柱形、55mm圆柱形、55mm圆柱左偏斜形、55mm圆柱右偏斜形4种燃烧室形状下的喷雾燃烧过程进行了喷雾燃烧可视化试验,获得了喷雾燃烧照片,通过对比分析得出高喷油压力及偏斜形状燃烧室具有更优的喷雾燃烧特性。

Injection pressures, drive torque for EUP and low pressure of fuel were collected and filtered, and the peak injection pressure, injection timing, peak torque value and their differences among 6 cylinders were calculated and achieved for the analysis of an EUP assembly.

介绍了基于研华PCI-1712高速数据采集卡设计的电控单体泵采集分析系统,分别采集了喷油压力、单 体泵驱动扭矩和燃油低压信号,并对信号进行滤波和计算,获得了单体泵的最大喷油压力及散差、喷油提前角及散 差、峰值扭矩及散差等参数,用于电控单体泵的分析。

Fuel injection control of high-pressure common-rail systems includes both fuel injection pressure control and driver control of injector solenoid valve.

高压共轨系统喷油控制包括喷油压力控制和喷油器电磁阀驱动控制2个方面。

By means of finite differential methods and appropriate boundary conditions,static and dynamic characteristics of bearing under nonzero input pressure and zero input pressure were computed,and numerical results were analyzed and compared.

研究了供油压力对液体动压径向滑动轴承动静特性的影响。

By means of finite differential methods,dynamic and static parameters of bearing when considering and not considering input pressure were computed based on generalized Reynolds equation,film thickness equation and velocity equation.

对螺旋油楔动压滑动轴承的动静特性进行了研究、联立求解雷诺方程、油膜厚度方程和速度方程等,运用有限差分法计算得出有无考虑供油压力情况下,轴承的动静特性参数。