Aiming at the speed characteristics test, which is one of important test items of engine test, this paper proposes studies of ac electrical dynamometer and its control system.
本文以发动机测试中一项重要的特性测试项目——速度特性测试为目的，重点研究了交流电力测功机及其控制系统设计。
AC electrical dynamometer is an important device for engine test with easy-controlled testing conditions, easy-collected and managed parameters as well as high measuring precision.
目前，交流电力测功机是进行发动机性能试验的重要装置，其优点在于试验条件容易控制，参数便于采集处理，测量精度较高。
By developing the vertical DC dynamometer, the test of power and economic properties of vertical shaft engine is accomplished, which provides scientific basis for improving the performances.
通过研制立式直流电力测功机，实现对立轴发动机的动力和经济性能测试，为改进其性能提供科学依据。
The dynamometer is core equipment of motor performance test station, mechanical drive test station and engine performance test station.
测功机是电机性能测试台、机械传动测试台、以及发动机性能测试台等试验装置中的核心设备。
The system with two control circuits separately for tested engine and dynamometer could conduct engine test automatically.
该系统能够对柴油机进行全自动测试，它具有柴油机和测功机两个控制回路。
AC electrical dynamometer is a key equipment of engine power-test system, whose load is mainly regulated by the excitation control system of electrical dynamometer.
交流电力测功机是发动机测功系统的重要设备，励磁控制系统是测功系统负载调节的主要控制装置。
Feasibility of evaluating light duty vehicle emissions by steady state multi mode emission test on engine dynamometer bench was studied.
研究了用发动机稳态台架模拟试验评价轻型车整车排放性能的可行性。
The modeling and control problem, how to use diesel-hydraulic dynamometer test bed to simulate main engine matching with propeller, is studied theoretically in this paper.
从理论上，对在采用柴油机水力测功的试验台上进行机桨配合模拟的建模与控制问题进行了深入研究。
A single-cylinder high-speed diesel engine with dual symmetric crank-conrod mechanism was developed and tested on a dynamometer test bed.
本文介绍了一种采用双曲柄连杆机构的高速单缸柴油机。
The dynamometer test results showed that the injection timing had a large effect on the fuel consumption and it must be accurately and precisely controlled, when the engine was working at low load.
试验表明：喷油时刻对于降低燃油消耗率影响很大，小负荷时必须对喷油时刻进行精确控制；
The dynamometer test results showed that the injection timing had a large effect on the fuel consumption and it must be accurately and precisely controlled, when the engine was working at low load.
试验表明：喷油时刻对于降低燃油消耗率影响很大，小负荷时必须对喷油时刻进行精确控制；
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