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

Figure 11

Direct imaging of PCCI combustion with two-stage injection strategy; main injection timing = −200°CA ATDC, main injection quantity = 10 mm³, second injection quantity = 1.5 mm³, injection pressure = 120 MPa, and injection angle = 150° [66].