VARIABLE COMPRESSION RATIO INTERNAL COMBUSTION ENGINE

Title:

VARIABLE COMPRESSION RATIO INTERNAL COMBUSTION ENGINE

Document Type and Number:

WIPO Patent Application WO/2017/009961

Kind Code:

A1

Abstract:

A variable compression ratio internal combustion engine (1) is provided with: a variable compression ratio mechanism (2) in which the mechanical compression ratio of the internal combustion engine (1) varies in accordance with the rotational position of a control shaft (18); a low-compression-ratio-side stopper (50); a high-compression-ratio-side stopper (60); a sensor (42) which senses the rotational position of a drive shaft (22) of an actuator (24); and an arm (30) which is press-fitted in the drive shaft (22). The arm (30) and the drive shaft (22) rotate relative to each other when a torque exceeding an upper limit torque is applied. The drive shaft (22) or the control shaft (18) is caused to rotate to the positions where the same is to be regulated by the stoppers (50, 60), and whether relative rotation is present or not is determined on the basis of the sensed values at both of the positions.

Inventors:

TAKAHASHI EIJI (JP)

Application Number:

PCT/JP2015/070226

Publication Date:

January 19, 2017

Filing Date:

July 15, 2015

Export Citation:

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Assignee:

NISSAN MOTOR (JP)

International Classes:

F02D15/02; F02B75/32; F02D45/00

Foreign References:

JP2012251446A	2012-12-20
JP2006226133A	2006-08-31
JP2014238027A	2014-12-18

Other References: