4 - 6 kg/cm2 and 200 - 250°C

6 - 12 kg/cm2 and 250 - 350°C

12 - 20 kg/cm2 and 350 - 450°C

20 - 30 kg/cm2 and 450 - 500°C

6 kg/cm

35kg/cmz

20 kg/cmz

27.5 kg/cmz

500- 1000°C

1000- 1500°C

1500-2000°C

2000-2500°C

increase

decrease

be independent

may increase or decrease depending on other factors

2-stroke engine can run in any direction

In 4-stroke engine, a power stroke is obtained in 4-strokes

thermal efficiency of 4-stroke engine is more due to positive scavenging

petrol engines occupy more space than diesel engines for same power output.