|
| Research on Low Speed Preignition Characteristics of a Turbocharged Direct Injection Gasoline Engine |
| DOI：10.13949/j.cnki.nrjgc.2019.06.008 |
| Key Words:turbocharged gasoline direct injection engine low-speed pre-ignition super-knock knock intensity engine oil |
|
| Hits: 3168 |
| Download times: 1658 |
| Abstract:A low speed pre-ignition characteristics was studied on a turbocharged direct injection gasoline engine. Results show that under low speed pre-ignition conditions at the speed of 1750 r/min and with a torque of 320 N·m, the earlier the ignition timing of pre ignition, the greater the knocking tendency and its intensity. Moreover, studying the influence of engine operating parameters and lubricating oil physicochemical properties on pre-ignition also shows that the frequency of pre-ignition increases with the rise of inter-cooler temperature and coolant temperature. High viscosity lubricating oil can suppress the frequency and tendency of superknock. Moreover, calcium element in the oil additive greatly promotes the occurrence of superknock, while phosphorus element plays a greater inhibitory role, and magnesium element has the least inhibitory effect. |
| View Full Text View/Add Comment Download reader |
|
|
|