Mathematics
Durability
100%
Ignition
91%
Engine
82%
Straight
69%
Compression
66%
Testing
46%
Lubrication
22%
Ring
11%
Carbon Monoxide
10%
Chromium
9%
Opacity
9%
Developing Countries
9%
Degradation
7%
Long-run
7%
Injection
6%
Inspection
6%
Vision
6%
Replacement
5%
Viscosity
5%
Estimate
5%
Life
5%
Vary
5%
Limiting
4%
Mathematical Model
4%
Model
3%
Performance
3%
Engineering & Materials Science
Ignition
58%
Durability
52%
Oils
42%
Engines
41%
Testing
33%
Piston rings
28%
Fueling
27%
Lubrication
20%
Fuel oils
16%
Engine cylinders
13%
Wear of materials
10%
Opacity
9%
Vegetable oils
8%
Carbon monoxide
7%
Chromium
7%
Developing countries
7%
Smoke
7%
Diesel engines
6%
Viscosity
5%
Inspection
5%
Degradation
5%
Mathematical models
4%
Chemical Compounds
Piston Ring
81%
Lubrication
55%
Fuel Oil
43%
Cylinder
34%
Wear
30%
Opacity
22%
Smoke
18%
Carbon Monoxide
14%
Fuel
13%
Modification
9%
Application
5%
Earth & Environmental Sciences
durability
63%
engine
60%
compression
50%
oil
38%
test
10%
vegetable oil
8%
fuel oil
7%
liner
7%
smoke
6%
carbon monoxide
6%
inspection
6%
chromium
5%
developing world
5%
replacement
5%
viscosity
5%
degradation
4%
speed
4%
analysis
3%
loss
3%