| 摘要 |
PCT No. PCT/GB97/01187 Sec. 371 Date Jan. 26, 1999 Sec. 102(e) Date Jan. 26, 1999 PCT Filed May 1, 1997 PCT Pub. No. WO98/04817 PCT Pub. Date Feb. 5, 1998A lean burn internal combustion engine includes an intake port. The intake port supplies an intake charge to the combustion chamber and exhaust gases are discharged through an exhaust port. Fuel is supplied by a fuel injector for dispersion within the air drawn into the combustion chamber by way of the intake port, and exhaust gases from the exhaust port are recirculated to the intake port without passing through the combustion chamber through an external EGR pipe. To promote lean burn and auto-ignition at low engine load, an additional fuel supply is provided in the EGR pipe for introducing fuel to be partially oxidised within the hot EGR gases before they enter the intake port. |
