SYSTEM AND METHOD OF CONTROLLING EXHAUST TEMPERATURE

摘要

An internal combustion engine system is provided. The system includes an engine defining a combustion chamber, a clean emission module and an air supply unit. The clean emission module is fluidly connected to an exhaust conduit from the combustion chamber. The air supply unit is configured to supply air into the combustion chamber and includes a compressor and a flow control device provided between the compressor and the combustion chamber. The compressor is configured to receive air from an air inlet via a first passage and supply the compressed air into the combustion chamber via a second passage. The flow control device is configured to selectively reduce the supply of compressed air into the combustion chamber such that an air fuel ratio in the combustion chamber is maintained between 15:1 to 18:1 at 20-90% engine load during a regeneration period for the clean emissions module.

主权项

1. An internal combustion engine system comprising:
an engine defining a combustion chamber; a clean emission module fluidly connected to an exhaust conduit from the combustion chamber; and an air supply unit configured to supply air into the combustion chamber, the air supply unit including:
a compressor configured to receive air from an air inlet via a first passage, the compressor further configured to supply compressed air into the combustion chamber via a second passage; anda flow control device provided between the compressor and the combustion chamber of the engine, the flow control device being configured to selectively reduce the supply of compressed air into the combustion chamber such that an air fuel ratio in the combustion chamber is maintained in a range from about 15:1 to 18:1 at 20-90% engine load during a regeneration period for the clean emission module.