Active method for cold start emissions reduction

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United States of America Patent

PATENT NO 12123369
APP PUB NO 20240263597A1
SERIAL NO

18107352

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Abstract

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An internal combustion engine system and methods of use are provided. The internal combustion engine system may comprise an engine chamber with a piston, and one or more of the following, configured to enable a negative valve overlap (NVO) mode of operation in which an intake valve opening (IVO) timing is later than an exhaust valve closing (EVC) timing: a continuously variable valve duration (CVVD) mechanism for both an intake valve and an exhaust valve; a dual CVVD and continuously variable valve timing (CVVT) mechanism for both the intake valve and the exhaust valve; and a cam system. The internal combustion system may comprise a fuel delivery system comprising one or more of a direct injector and a port fuel injector; and may comprise an ignition system.

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Patent Owner(s)

Patent OwnerAddress
HYUNDAI MOTOR COMPANYSEOUL
KIA CORPORATION12 HEOLLEUNG-RO SEOCHO-GU SEOUL 06797

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fantin, Nicholas Ann Arbor, US 4 1
Ha, Kyoung Pyo Gyeonggi-do, KR 119 1206
Hollowell, Jeffrey Commerce, US 6 1
Shirley, Mark Albion, US 10 10
Zhu, Shengrong Ann Arbor, US 5 1

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