EXHAUST-HEAT-RECOVERY DEVICE AND EXHAUST-HEAT-RECOVERY METHOD

Title:

EXHAUST-HEAT-RECOVERY DEVICE AND EXHAUST-HEAT-RECOVERY METHOD

Document Type and Number:

WIPO Patent Application WO/2014/103824

Kind Code:

A1

Abstract:

This exhaust-heat-recovery device is equipped with an expander capable of rotating and driving as a result of heat recovered by an exhaust-heat recovery apparatus for recovering exhaust heat in an exhaust recirculation channel for recirculating, on the air-intake side, a portion of the exhaust from an engine. The exhaust-heat-recovery device executes: an internal EGR control for controlling the timing of an engine air-intake valve and exhaust-discharge valve, and recirculating a first recirculation amount of the exhaust; and an external EGR control for controlling a recirculation valve, and recirculating a second recirculation amount of exhaust. When the expander is rotated and driven as a result of the heat recovered by the exhaust-heat recovery apparatus, the proportion of the second recirculation amount is increased more than the first recirculation amount.

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Inventors:

NAGAI HIROYUKI (JP)
MIZOGUCHI SHINICHIRO (JP)

Application Number:

PCT/JP2013/083866

Publication Date:

July 03, 2014

Filing Date:

December 18, 2013

Export Citation:

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Assignee:

NISSAN MOTOR (JP)
RENAULT SA (FR)

International Classes:

F01P3/20; F01K23/06; F01K23/10; F01L1/34; F01N5/02; F02D13/02; F02D21/08; F02G5/00; F02G5/02; F02M25/07

Foreign References:

JP2012102619A	2012-05-31
JP2012087687A	2012-05-10
JP2010242582A	2010-10-28