Technical Description: \ n \ nBefore modification: \ n \ nOnly one type of engine duct seat ring press-fitting could be performed. \ n \ nAfter modification: \ n \ n1. Compatible with the press-fitting of two types of diesel engine duct seat rings. \ n \ n2. Design the seat ring pressure head for the new model, with the duct remaining unchanged. When changing models, manually switch the seat ring pressure head. 3. Redesign and modify the liquid nitrogen tank to adapt to the new seat size. 4. Manually switch the material channels of the two models when changing models. \ n5. Manually switch the cylinder head fixture when changing models

Technical Description:
Before renovation: Manually pre-tighten and tighten the bolts. After the transformation: Manual pre-tightening is done at the previous workstation, while automatic tightening is carried out at this workstation, saving one worker.

Technical Description:
Before modification: Two types of engine oil, two workstations, manual refilling, engine oil refilling at the oil port and the main oil passage. After the transformation: Single station, fully automatic filling at the oil port and main oil passage, and automatic switching between two types of engine oil at two positions. Saves one labor.