Abstract
In order to ensure the efficiency of Diesel engines and to adjust the exhaust gas for environmental requirements, it is desirable to control not only the timing of fuel injection beginning but also the period or duration of the injection positively. With the conventional fuel injection systems however, it has been extremely difficult to carry out especially the latter control in all operation modes. The authors, based on a new idea of controlling the amount of fuel injection by means of injection pressure and thereby regulate the injection period freely and at its optimum value in principle, made some basic experiments and obtained satisfactory results on the whole. The results will be reported briefly in the following.
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