Title:
ENGINE NOISE SUPPRESSION SYSTEM
Document Type and Number:
Japanese Patent JP2019203457
Kind Code:
A
Abstract:
To reduce suction noise without adding a new component.SOLUTION: A controller executes control processing comprising: acquiring a vehicle speed V (S100); obtaining an engine speed, a crank angle and a fuel injection amount (S104) when an engine is in a steady operation state (YES in S102); setting a parameter of a noise reduction wave (S106); setting a change pattern of the drive current of a motor (S108); executing noise reduction control (S110); and ending the noise reduction control (S114) when the engine is in a transient operation state (YES in S112).SELECTED DRAWING: Figure 2
Inventors:
MATSUMOTO TAKARA
FUJITA KENJI
KATO HIDERO
FUJITA KENJI
KATO HIDERO
Application Number:
JP2018099713A
Publication Date:
November 28, 2019
Filing Date:
May 24, 2018
Export Citation:
Assignee:
TOYOTA IND CORP
International Classes:
F02M35/12; F01N1/06; F02B33/00; F02B39/10; F02D45/00; F02M35/112; F02M35/116
Attorney, Agent or Firm:
Fukami patent office