油泵驱动 meaning in English

oil pump drive

At an early stage in the evolution of the high - speed diesel a variable timing device was introduced in the pump drive coupling , taking the form of a helically splined coupling by means of which the angular relation between driving and driven shafts could be varied by manual or automatic control
翻译：在高速柴油机发展的早期，可变的正时装置被引用到油泵驱动联轴节上，采用螺旋式花键套管的形状，驱动轴和从动轴之间的相对角度可以通过手动或自动控制进行改变。
From the above it will be realised that fundamental difference between petrol and diesel engines is that in the petrol engine the source of heat for igniting the charge , namely an electric spark , is generated outside the engine , and is taken , as it were , into the waiting charge at the required instant
翻译：在高速柴油机发展的早期，可变的正时装置被引用到油泵驱动联轴节上，采用螺旋式花键套管的形状，驱动轴和从动轴之间的相对角度可以通过手动或自动控制进行改变。