柴油机试验站微机监测系统改造翻译(英文)

Improving the Performance of the Diesel Test by Applying the

Computer Monitoring System

The central function of diesel test-bed is testing the locomotive diesel before checking and accepting. At present, there are lots of problems in many testing systems of the national diesel test-bed, such as low precision, high working intensity, low product efficiency and resource wasting. It has restricted the improvement of testing techniques and repairing level, so it is important to rebuild the diesel test-bed.

1. A diesel engine test station of computer monitoring system should achieve the following functions:

Diesel engine test station computer monitoring system to be followed in the principles of transforming:Diesel Engine Test in strict accordance with the outline of requirements: Commitments to be measured by parameters of the whole monitoring; strictly controlled, time control, the scope of control, assurance test by order.

Diesel bench test conducted in three stages: breaking-in period, examine and adjust the phase and acceptance stage. As diesel engine conditions in various provisions of the continuing test of time is required, therefore, in accordance with the diesel engine test systems in addition to the outline of the requirements of the above-mentioned parameters of engine monitoring of the entire process, in order to facilitate operations personnel to operate the diesel engine tips should be provided in all test conditions should be duration.

To ensure the safety of diesel engine test, the process of the trial process must be in strict accordance with the order of trial, if not completed before a trial can not be entered under a pilot.

As the diesel engine parameters to be monitored more, the display of these parameters can not be completed in the middle of a screen. Therefore, in order to facilitate the display, but also facilitate operations personnel to observe, monitor project design should be in accordance with the importance and the signal type, the monitoring data to the signal-screen display.

Diesel engine test station computer monitoring system should be modified to achieve:Diesel →analog signal parameters →digital signal →parameters →data records →data storage →data sharing (networking) process to operate inter-linkages between convenience and machinery, a response function should have

the printing function; take into account the security of the system, but also with anti-virus, human factors such as damage the function of the system. Additionally, the ultimate aim is to diesel engine parameters in a row on a computer, monitoring the entire process of realization, therefore, the whole process will be diesel engine parameters of the system shows that the main function. In order to achieve multi-sectoral regulation, diesel engine test station computer monitoring system should also be extended data sharing (networking) capabilities.

Achieve functional Diesel Engine Fault Diagnosis: In the diesel engine test process, the failure is inevitable. Some of these failures are dominant, and some are hidden in some danger of smaller, some are devastating. Therefore, the fault can be found in time for staff to promptly eliminate, it is diesel engine test station computer monitoring system to achieve a functional, but also a major feature of the system.

2. The functional realization of the following:

System theory and structure:

In order to achieve diesel engine test station computer monitoring the function of the system, the principles of systems are as follows:

Diesel engine test in accordance with the outline of requirements, the test engine in the process parameters to monitor the speed, engine power, all kinds of pressure, temperature and fuel consumption of various rates. In these parameters, speed, pressure, temperature, can be measured directly, but power, fuel consumption rate can not be measured directly out only by measuring other parameters to be calculated. In the diesel engine test stand computer monitoring system, the diesel engine power parameter is the main generator by measuring the current, voltage then calculated, and the rate of fuel consumption is diesel fuel by measuring Jin, a fuel oil mains power flow calculation, and then after be.

First to be monitored by the diesel engine parameters is signal converters. There are two methods of conversion: One is the use of sensors and other means to the engine speed, pressure, temperature, fuel flow, and other parameters to transform analog signals; another diesel engine is the main generator voltage signal leads directly or through diversion Diesel generators will be for the current signal extraction.

In order to test the entire process can be recorded, but also part of parameters can be calculated by computer, therefore, the system will be converted after the digital signal through computer interface (the instrument comes with the computer interface)