| 主权项 |
1. An opposed-piston engine including at least one cylinder with exhaust and intake ports, a charge air channel to provide charge air to at least one intake port of the engine, and a turbocharger, the turbocharger including a turbine inlet in fluid communication with at least one exhaust port of the engine, a turbine outlet, a compressor inlet for receiving inlet air, and a compressor outlet in fluid communication with the charge air channel, in which the engine comprises:
an EGR (exhaust gas recirculation) channel having an outlet and an inlet in fluid communication with the exhaust port; a supercharger in fluid communication with the EGR channel output to pump exhaust gas through the EGR loop; a recirculation channel for transporting pressurized air produced by the supercharger to a supercharger inlet; an inlet shunt channel in fluid communication with the supercharger inlet; a mixer in fluid communication with a supercharger outlet and the charge air channel, and operable to provide charge air to the at least one intake port; and, an engine control mechanization operable to detect an engine start condition and to operate the EGR channel, the recirculation channel, and the inlet shunt channel in response to the start condition by:
closing the EGR and recirculation channels; and,causing inlet air to flow through the inlet shunt channel to the supercharger inlet while preventing inlet air from flowing to the compressor inlet. |
