Research on Power Matching of Excavator's Electronically Controlled Diesel Engine and Electronically Controlled Hydraulic Pump under Different Working Conditions

2021 ◽  
Author(s):  
Tang Zhenzhou
Keyword(s):  
Diesel Engine ◽  
Working Conditions ◽  
Hydraulic Pump ◽  
Power Matching

An Analysis of Energy Flow in Diesel Engine on AVL-Boost

2021 ◽  
Vol 31.2 (149) ◽  
pp. 40-46
Keyword(s):  
Diesel Engine ◽  
Working Conditions ◽  
Energy Flow ◽  
Combustion Engine ◽  
Cooling Water ◽  
Exhaust Gases ◽  
Operating Modes ◽  
Useful Power ◽  
System Energy ◽  
Coolant System

Energy achieved by burning fuel in an internal combustion engine (ICE) is divided into several main parts such as useful power, heat transfer for coolant system, energy of exhaust gases and mechanical losses. A detailed analysis of the quantity and distribution of these components will be an essential basis in the study of ICE improvement. In this paper, the authors present the calculation of energy distribution on D243 diesel engine through simulation on AVL-Boost. The results showed that the average thermal efficiency of the ICE during all operating modes was 25.8%. The total energy transfer for the coolant system and the heat of exhaust gases is 63.54% and reaches maximum 103.7 kW in rated mode. The acquired results can be used as a research basis to improve the economics and technical aspects of ICE such as optimization of working conditions of coolant and lubricating systems. As well as calculate the equipment of turbocharger or systems that utilize energy of exhaust gases and cooling water.

Experimental Study on Anti-Fatigue Damage Structural Design of Diesel Engine Bearings

2012 ◽  
Vol 214 ◽  
pp. 97-101
Author(s):  
Zhen Jie Guo
Keyword(s):  
Experimental Study ◽  
Fatigue Life ◽  
Diesel Engine ◽  
Service Life ◽  
Fatigue Damage ◽  
Working Conditions ◽  
Structural Design ◽  
Connecting Rod ◽  
Main Bearing ◽  
Modern Times

With higher requirements on energy-saving and environmental protection of diesel engine in the modern times, the loads on main bearing and connecting rod bearing of diesel engine are continuously increased, and also working conditions are even more critical. Bearings are the key moving parts of diesel engine, and play an important influence on reliability, service life and other performances of diesel engine. Therefore, the reasons for fatigue damages to its bearings greatly affect fatigue life. In traditional designs, effects of the problem are studied few. In this paper, therefore, this problem is studied for discussing the formation reasons and solutions for it theoretically.

Study on Energy Saving PID Control of HST Tele-Control Vehicle

2013 ◽  
Vol 850-851 ◽  
pp. 636-639
Author(s):  
Jian Hua Chen ◽  
Xi Hui Mu ◽  
Feng Po Du ◽  
Kai Lv
Keyword(s):  
Diesel Engine ◽  
Pid Control ◽  
Closed Loop ◽  
Feedback System ◽  
Joint Control ◽  
Economic Region ◽  
Power Matching ◽  
Loop Feedback ◽  
Closed Loop Feedback ◽  
Speed Characteristic

Based on the analysis of power matching between diesel engine and HST, a simulation model was built by AMEsim. By using of simulation, the result of speed characteristic in closed loop feedback system was analyzed. The results show that power matching and joint control between diesel engine and HST is an effective way to improve the vehicles matching identity and ensure its working point in the economic region.

scholarly journals A Novel Fault Diagnosis Method for Diesel Engine Based on MVMD and Band Energy

2020 ◽  
Vol 2020 ◽  
pp. 1-17
Author(s):  
Cheng Gu ◽  
Xinyong Qiao ◽  
Ying Jin ◽  
Yanbin Liu
Keyword(s):  
Fault Diagnosis ◽  
Diesel Engine ◽  
Working Conditions ◽  
Single Channel ◽  
Recognition Rate ◽  
Great Influence ◽  
Vibration Signal ◽  
Measuring Point ◽  
Band Energy ◽  
Vibration Signal Analysis

Vibration signal, as an important means for diesel engine condition detection and fault diagnosis, has attracted attention for many years. In traditional vibration signal analysis, most processing methods are for single-channel data. However, single-channel vibration signal cannot reflect the operating information of the diesel engine comprehensively because diesel engine vibration is coupled by multiple source signals. This paper proposes the MVMD band energy method for fault diagnosis by four channels of vibration signals. First, the original multivariate signals are decomposed adaptively by MVMD, which obtains a series of components with modal alignment. Then, the band energy values of each measuring point are calculated as the fault characteristics. Finally, SVM is used to realize the diagnosis and identification of diesel engine misfire. The working conditions have a great influence on the vibration signal of the cylinder. In order to obtain the best diagnostic working conditions, six working conditions are set for testing. The result shows that the fault identification rate is highest under the 1500 rpm and 50% load working condition. The fault recognition rate of this method reaches more than 99%, which is superior to the other four common methods.

Study on the Emission Properties of Biodiesel Fueled on Medium-Sized Diesel Engine under Steady Working Conditions

2012 ◽  
Vol 608-609 ◽  
pp. 275-280
Author(s):  
Yun Xue ◽  
Hongwei Liu ◽  
Wu Quan Liu
Keyword(s):  
Diesel Engine ◽  
Working Conditions ◽  
Diesel Fuel ◽  
Renewable Resource ◽  
Contrastive Analysis ◽  
Emission Performance ◽  
Emission Properties ◽  
Oil Resources ◽  
Soybean Biodiesel ◽  
Test Result

As a kind of renewable resource, biodiesel can relieve the shortage of oil resources. This paper tests the emission performance of biodiesel fueled on 4102ZL diesel engine and makes a contrastive analysis with the emissions of 0# diesel fuel. The test result shows improvement of varying degrees in the emission indexes of the engine fueled with B100 soybean biodiesel.

Optimal Efficiency Shift Schedule of Automatic Transmission for Construction Vehicle

2012 ◽  
Vol 468-471 ◽  
pp. 2403-2408
Author(s):  
Huai Liang Kang ◽  
Jie Gong ◽  
Ding Xuan Zhao ◽  
Tian Yu Li
Keyword(s):  
Working Conditions ◽  
High Efficiency ◽  
Automatic Transmission ◽  
Vehicle Speed ◽  
Hydraulic Pump ◽  
Wheel Loader ◽  
Dynamic Simulation Model ◽  
Simulation Results ◽  
Optimal Efficiency ◽  
Pump Pressure

The working conditions for construction vehicles (wheel loader, bulldozer, etc.) are very complicated and the operating loads change frequently and sharply. This result will lead to lower powertrain efficiency. In order to maintain the high efficiency of construction vehicles equipped with automatic transmission, an optimal efficiency shift (OES) schedule with 3-parameter (vehicle speed, throttle opening, and hydraulic pump pressure) is proposed and designed by creating and analyzing the powertrain model. A dynamic simulation model using the OES schedule for the construction vehicle has been established by MATLAB/Simulink. The simulation results show that the 3-parameter shift (3PS) schedule is superior to the 2-parameter (vehicle speed and throttle opening) shift (2PS) schedule in energy saving.

Numerical Calibration of Diesel Engine Variable Valve Timing

2012 ◽  
Vol 516-517 ◽  
pp. 628-633
Author(s):  
Sheng Ou Hu ◽  
Ren Xian Li
Keyword(s):  
Diesel Engine ◽  
Working Conditions ◽  
Combustion Engine ◽  
Engine Performance ◽  
Simulation Method ◽  
Calibration Method ◽  
Operating Conditions ◽  
Variable Valve Timing ◽  
Valve Timing ◽  
Variable Valve

The performance of internal combustion engine can be improved by using variable valve timing technology. but how to get the optimal inlet/export valve open or close angles under various operating conditions still relies mainly on testing calibration method. By means of one-dimensional working process simulation method, the performance of a four cylinder diesel engine was simulated, and the influences of diffrent inlet/export valve timing on engine performances were compared. Optimum valve timing values and engine performances under thirty kinds of working conditions were gotton. After that, the engine performances compared with that without variable valve timing. Simulation results show that the engine performance, especially the emission performance, can be improved at all simulation working conditions. The method used in this paper may be a new way for calibration of optimal valve timing.

scholarly journals Comparative Analysis on Performance Emission Test of Single Cylinder Engine and Multi Cylinder Engine

2020 ◽  
Vol 6 (11) ◽  
pp. 265-273
Author(s):  
Yuanyuan Shi ◽  
Xiaoxiao Niu ◽  
Xiangchen Zhang ◽  
Zhilei Wang
Keyword(s):  
Comparative Analysis ◽  
Diesel Engine ◽  
Working Conditions ◽  
Performance Test ◽  
Simple Structure ◽  
Emission Performance ◽  
Single Cylinder ◽  
Single Cylinder Engine ◽  
The Difference ◽  
Important Significance

In the research and test of diesel engine, because the performance test of multi cylinder engine with different configuration needs to be replaced, and there is a certain risk in the first test, while the single cylinder engine is more suitable for the research and test of different configurations because of its simple structure and convenient replacement of components. Therefore, by comparing the differences of combustion state between single cylinder engine and multi cylinder engine with the same configuration, the change law of performance characteristics of single cylinder engine and multi cylinder engine under different working conditions is confirmed. By analyzing the difference of emission performance of single cylinder engine with different configuration, the emission performance of multi cylinder engine under different configuration is predicted. The research in this paper has important significance for further research and test of diesel engine.

Mechatronic System of the Injection of Ethanol in an Intake Manifold of a Diesel Engine

2006 ◽  
Vol 113 ◽  
pp. 109-113
Author(s):  
S. Pukalskas ◽  
O. Chernashejus ◽  
G. Garbincius
Keyword(s):  
Diesel Engine ◽  
Working Conditions ◽  
Mathematical Expression ◽  
Intake Manifold ◽  
Efficiency Coefficient ◽  
Mechatronic System ◽  
Maximum Heat ◽  
Heat Efficiency ◽  
Air Intake

This research was carried out with an Audi-80 turbo diesel engine that has a supplementary ethanol feed to air intake. The obtained results allowed for a mathematical expression to get a description of the optimal ethanol supply, which ensures the maximum heat efficiency coefficient for different engine working conditions.

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