A Review on Homogeneous Charge Compression Ignition and Low Temperature Combustion by Optical Diagnostics

Figure 7

Chemiluminescence images under different intake and coolant temperatures with the same 50% burn point and SOI = −300°CA ATDC; = 95°C, = 85°C (first) and = 125°C, = 55°C (last). The number below each image is the light intensity [62].