Analysis of the underframe of the TEM23 diesel locomotive and suggestions for shortcomings elimination

The analysis of the design features of the trolley of the shunting diesel locomotive TEM23. In the process of this analysis the directions for its improvement are determined. It is proposed to ensure the rotation of the trolley frame in the vertical plane by reducing the body supports to two and to use a low-lowered kingpin, to equip the trolleys with pneumatic spring suspension in the form of two-corrugated shells installed in series with shortened spring suspension springs. The proposed options for improving the diesel locomotive undercarriage will increase the competitiveness of products and reduce costs.