The control device and controller of many cylinder internal combustion engines

Title:

The control device and controller of many cylinder internal combustion engines

Document Type and Number:

Japanese Patent JP6184834

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To provide a multi-cylinder internal combustion engine control device capable of transitioning a cylinder stop range (cylinder-reduced range) to a range closer to an engine high torque side while maintaining power consumption effect, and therefore further improving power consumption performance when a vehicle actually travels.SOLUTION: A multi-cylinder internal combustion engine control device includes: a cylinder stop mechanism that can stop activating intake valves and exhaust valves of partial cylinders among a plurality of cylinders; and a variable compression ratio mechanism that can change a mechanical compression ratio of each of all the cylinders. Operation ranges include a cylinder-reduced operation range in which the cylinder stop mechanism stops activating the intake valves and the exhaust valves of the partial cylinders, and a full-cylinder operation range in which engine valves of all the cylinders are activated. If an engine operation state changes from the cylinder-reduced operation range near an engine low torque side to the full-cylinder operation range near an engine high torque side, the variable compression ratio mechanism changes the mechanical compression ratio from a first mechanical compression ratio that is relatively low to a second mechanical compression ratio that is relatively high.

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Inventors:

Nobu Nakamura

Application Number:

JP2013219714A

Publication Date:

August 23, 2017

Filing Date:

October 23, 2013

Export Citation:

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Assignee:

Hitachi Automotive Systems, Ltd.

International Classes:

F02D15/02; F01L13/00; F02B75/04; F02D13/06; F02D17/02; F02D23/00; F02D43/00

Domestic Patent References:

JP2012193635A
JP2011208628A
JP2007239604A
JP2013057289A
JP2009250068A
JP61200339A

Foreign References:

WO2011067865A1

Attorney, Agent or Firm:

Hiromichi Kobayashi
Tomioka Kiyoshi
Tsuyoshi Hashimoto

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