| 摘要 |
<p>An internal combustion engine (10) calibrated to operate in a lean burn mode comprising means for supplementing the total output torque, in at least part of the speed/load range, without enriching the mixture beyond the lower limit of lean burn. The source of additional torque may be a supercharger (16), an auxiliary motor (20) or a regenerative braking system (18).</p> |
