combustion period
1.The results demonstrated that heat release rates,mass loss rates and smoke production rate of low density polyethylene retarded by chlorinate paraffin and decabromodiphenyl oxide were distinctly reduced during the whole combustion period. When the mass ratio of chlorinate paraffin to dechlorane plus was 1∶1,the synergistic effect was the best.
2.Meanwhile,the heat release rate,mass loss rate and smoke production rate of low density polyethylene retarded by dechlorane plus and decabromodiphenyl oxide during the later combustion period decreased obviously,and when the mass ratio of 3∶2 of dechlorane plus to decabromodiphenyl oxide was used,the synergistic effect of low density polyethylene was best.
3.This paper brings forward an ignition detection method based on crankshaft transient acceleration analysis It compares the transient acceleration of two startup procedures and then find out the ignition moment(start of combustion)during startup period Crankshaft dynamics analysis and real test show that this method can identify the ignition moment,with the accuracy improved from cycle level to angle level The test is carried out on a 6-cylinder common rail diesel engine
4.Through cooperation between BHP Iron Ore Company and Lynx Engineering Company,not only a gondola car which improves combustion efficiency and applies new materials is developed,but also a new maintenance method is applied. As a result,the purchase and maintenance cost in the whole operation period is reduced greatly.
5.The combine harvester is overall 3 packets of period of efficacy are 1 year; 3 packets of period of efficacy are main part 2 years, main part is to point to internal-combustion engine airframe, cylinder housing of casing of lid, flywheel, frame, gear-box, clutch, change gear case of machine, final drive to body.
6.The investigation has declared that the fuel injection with BQ fuel pump had higher injection pressure, bigger fuel supply rate and shouter fuel supply duration, which would cause the fuel injection quantity and the fule-air mixture to increase during ignition delay period, the pre-mixed combustion to become acutely, and finally result in increased power levels of noise.
