Diesel exhaust fluid cooling system
AssigneeInternational Engine Intellectual Property Company, LLC
InventorTimothy M. Lyons
Life of this patent
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Abstract
A vehicle includes a diesel engine having a crankcase and a crankcase ventilation system connected to the crankcase and configured to ventilate crankcase exhaust gases. The vehicle also includes a diesel exhaust fluid (DEF) reservoir including DEF therein, the DEF configured to reduce emissions of the diesel engine, and a DEF cooling system operably connected to the crankcase and the DEF reservoir. The DEF cooling system is configured to receive the DEF and use the DEF to cool the crankcase exhaust gases passing therethrough.
Claims19
A vehicle, comprising:
- a diesel engine having a crankcase;
- a crankcase ventilation system downstream of the crankcase and configured to ventilate crankcase exhaust gases;
- a diesel exhaust fluid (DEF) reservoir including DEF therein, the DEF configured to reduce emissions of the diesel engine;
- a DEF cooling system operably connected to the crankcase and the DEF reservoir, the DEF cooling system configured to receive the DEF and use the DEF to cool the crankcase exhaust gases passing there through;
- a turbocharger with a compressor connected to the diesel engine, the compressor receiving intake air and recirculated crankcase exhaust gases;
- and
- a DEF heat exchanger adjoining the compressor of the turbocharger, the DEF heat exchanger configured to receive the DEF and use the DEF to cool the compressor of the turbocharger.
A diesel engine system, comprising:
- a diesel engine having a crankcase;
- a crankcase ventilation system downstream of the crankcase and configured to ventilate crankcase exhaust gases;
- a diesel exhaust fluid (DEF) reservoir including DEF therein, the DEF configured to reduce emissions of the diesel engine;
- and
- a DEF cooling system operably connected to the crankcase and the DEF reservoir, the DEF cooling system configured to receive the DEF and use the DEF to cool the crankcase exhaust gases passing there through;
- a turbocharger with a compressor connected to the diesel engine, the compressor receiving intake air and recirculated crankcase exhaust gases;
- and
- a DEF heat exchanger adjoining the compressor of the turbocharger, the DEF heat exchanger configured to receive the DEF and use the DEF to cool the compressor of the turbocharger.
A method, comprising:
- providing a diesel engine having a crankcase, a crankcase ventilation system downstream of the crankcase, a diesel exhaust fluid (DEF) reservoir including DEF therein, the DEF configured to reduce emissions of the diesel engine, a DEF cooling system operably connected to the crankcase and the DEF reservoir;
- a turbocharger with a compressor receiving intake air and recirculated crankcase exhaust gases and a DEF heat exchanger adjoining the compressor configured to use the DEF to cool the compressor;
- ventilating, by the crankcase ventilation system, crankcase exhaust gases exiting from the crankcase;
- supplying the DEF to the DEF cooling system;
- and
- cooling the crankcase exhaust gases, by the DEF cooling system, to condense vapors in the crankcase exhaust gases passing through the DEF cooling system so that the crankcase ventilation system filters particulate matter out of the crankcase exhaust gases to further reduce emissions of the diesel engine.
Dependencies are inferred from the claim text.