抄録
This paper presents the research to introduce an on-off speed control system of a gasoline engine coupled with a dynamometer, in order to make simple and easy the performance test of the engine.
The on-off control device consists of two parts, one being a conventional on-off control element that is an electromagnetic water valve, and the other being an integral action element that is an electric motor valve. The latter is connected with the on-off element in parallel and operated by a three position acting relay. In a transient state, the two parts of the control device operate simultaneously. On the contrary, in a steady state, only the on-off element operates.
It is found that this control system has an excellent merit as compared with the conventional on-off control system, as both the setting time and the limit-cycle amplitude of the control system are short in a step response.
It is mentioned that, for the experiments on the effect of controllability, satisfactory results are obtained.
