# Petrol engines of trucks and buses — Tatneft JSC, Almetyevsk TTD-1

**IE S002**  
Tatneft JSC, Almetyevsk TTD-1 · Russia · 2001

Compression increased and evened out across cylinders, gasoline consumption dropped, emissions decreased. Russia · 2001. 10-15 % — compression across cylinders.

## Measured

- compression across cylinders, 3.0-11.0 → 6.0-11.7 kgf/cm² — **10-15 %**
- petrol consumption, measured on a metered 100 g portion of fuel — **6-13 %**
- HC content in exhaust gases, 300-2000 → 230-780 ppm — **46-67 %**

## Conclusion

Compression increased and evened out across cylinders, gasoline consumption dropped, emissions decreased

Page: https://industry.xado.com/case/tatneft_series
PDF report: https://industry.xado.com/pdf/TIER%20S/Tatneft/GAZ-66-ZIL-131-KAvZ-PAZ/IE-S002_XADO_Tatneft_GAZ-66-ZIL-131-KAvZ-PAZ_EN.pdf