# Truck and bus diesel engines — Universalneftekhim Lab, VTII LLC

**IE S026**  
Universalneftekhim Lab, VTII LLC · Ukraine · 2014

Compression evened out across cylinders, worn cylinders came up in size, exhaust became lighter. Truck and bus diesel engines, Universalneftekhim Lab, VTII LLC.

## Measured

- compression by cylinder, 18-29 → 26-31 bar — **10.75 %**
- fuel consumption, highway cycle, 25.8 → 25.1 l/100 km — **2.95 %**
- exhaust smoke opacity, 1.438 → 1.21 m⁻¹ — **15.7 %**
- worn cylinder bore diameter, 128.12 → 128.08 mm — **0.04 mm**

## Conclusion

Compression evened out across cylinders, worn cylinders came up in size, exhaust became lighter

Page: https://industry.xado.com/case/podtverzhdenie_effektivnosti_xado_maximum_for_disel_truck_g
PDF report: https://industry.xado.com/pdf/TIER%20S/UniversalNH/diesels-trucks-buses-MAN-DAF/IE-S026_XADO_UniversalNH_diesels-trucks-buses-MAN-DAF_EN.pdf
Original scan: https://industry.xado.com/scans/podtverzhdenie_effektivnosti_xado_maximum_for_disel_truck_g.pdf