The Class 46 design was structurally the same as the preceding Class 45 build , and had the same Sulzer engine , but differed in the fitment of a Brush generator and traction motors , in place of the Crompton Parkinson equipment fitted to the Class 45 .
The Class 46 design was structurally the same as the earlier Class 45 build , and had the same Sulzer engine . It differed in the fitment of a Brush generator and traction motors , in place of the Crompton Parkinson equipment fitted to the Class 45 .