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    A FOUR-STROKE INTERNAL COMBUSTION ENGINE INCLUDING VARIABLE COMPRESSION RATIO AND A VEHICLE
    3.
    发明授权
    A FOUR-STROKE INTERNAL COMBUSTION ENGINE INCLUDING VARIABLE COMPRESSION RATIO AND A VEHICLE 有权
    一种四冲程内燃式发动机，包括可变压缩比和一辆车

    公开(公告)号：EP3103986B1

    公开(公告)日：2018-01-31

    申请号：EP15170965.6

    申请日：2015-06-08

    申请人： Gomecsys B.V.

    发明人： DE GOOIJER, Lambertus Hendrik ,  WAGENAAR, Sander ,  WAGENVOORT, Willem-Constant

    IPC分类号： F02B75/04 ,  F01L13/00 ,  F02D15/02 ,  F02B41/04 ,  F02B75/02

    CPC分类号： F02D15/02 ,  F01L1/047 ,  F01L13/0036 ,  F01L2013/0078 ,  F02B41/04 ,  F02B75/02 ,  F02B75/048 ,  F02B75/18 ,  F02B2075/027 ,  F02B2075/1816 ,  F02D13/0215 ,  F02D13/0242 ,  F16F15/265 ,  F16H59/74 ,  F16H61/0213 ,  Y02T10/18

    摘要： A four-stroke internal combustion engine (1) including variable compression ratio comprises a crankcase including at least a cylinder having an intake valve and an exhaust valve, a crankshaft (2) having a crankpin (4) and being supported by the crankcase and rotatable with respect thereto about a crankshaft axis (5), a connecting rod (9) including a big end (8) and a small end (10), a piston (11) being rotatably connected to the small (10) end and slidable in the cylinder, a crank member (6) being rotatably mounted on the crankpin (4), and comprising at least a bearing portion (7) which is eccentrically disposed with respect to the crankpin (4), and having an outer circumferential wall which bears the big end (8) of the connecting rod (9) such that the connecting rod (9) is rotatably mounted on the bearing portion (7) of the crank member (6) via the big end (8), a crank member drive system (12, 13, 14, 16) for rotating the crank member (6) at a rotation frequency with respect to the crankcase which is half of that of the crankshaft (2), and a control system (18-25) for operating the engine (1) with repetitive cycles, wherein each cycle includes an intake stroke, compression stroke, combustion stroke and exhaust stroke, respectively, and for changing the compression ratio in the compression stroke. The control system (18-25) is adapted such that it can interrupt the repetitive cycles by rotating the crankshaft (2) an additional single revolution between two successive combustion strokes for switching between a high and low compression ratio.

    CONTROL DEVICE FOR COMPRESSION RATIO VARIABLE INTERNAL COMBUSTION ENGINE
    5.
    发明公开
    CONTROL DEVICE FOR COMPRESSION RATIO VARIABLE INTERNAL COMBUSTION ENGINE 审中-公开
    STEUERUNGSVORRICHTUNGFÜREINEN VERBRENNUNGSMOTOR MIT VARIABLEMVERDICHTUNGSVERHÄLTNIS

    公开(公告)号：EP3163055A1

    公开(公告)日：2017-05-03

    申请号：EP14895794

    申请日：2014-06-27

    申请人： NISSAN MOTOR

    发明人： HIYOSHI RYOSUKE ,  OHTSU SHO

    IPC分类号： F02D15/02 ,  F02B75/32 ,  F02D13/02 ,  F02D41/04 ,  F02D43/00 ,  F02P5/15

    CPC分类号： F02D15/02 ,  F02B75/045 ,  F02D9/08 ,  F02D13/0215 ,  F02D37/02 ,  F02D41/0002 ,  F02D41/22 ,  F02D41/2438 ,  F02D41/2441 ,  F02D41/2445 ,  F02D41/2474 ,  F02D2041/001 ,  F02D2250/18 ,  F02P5/145 ,  F02P5/151 ,  Y02T10/18 ,  Y02T10/42 ,  Y02T10/46

    摘要： A control device for a compression ratio variable internal combustion engine is provided with a compression ratio variable mechanism for changing an engine compression ratio in accordance with a rotational position of a control shaft, and a compression ratio detection unit that detects an actual compression ratio. In a predetermined engine operating condition (S11) such as immediately after an engine start, reference position learning operation for the compression ratio detection unit is carried out (S12) with the control shaft mechanically locked up at a predetermined reference position. During operation of the engine, even when the actual compression ratio is lost due to a communication error or the like (S13), or even when a difference between the actual compression ratio and a target compression ratio becomes greater than an assumed deviation due to some abnormalities (S14), the reference position learning operation is immediately carried out (S15), thereby enabling a quick return to a state where normal compression ratio control can be carried out.

    摘要翻译： 本发明的压缩比可变内燃机的控制装置具备根据控制轴的旋转位置来变更发动机压缩比的压缩比可变机构和检测实际压缩比的压缩比检测部。 在紧接发动机起动之后的规定的发动机运转状态（S11）中，在将控制轴机械地锁定在规定的基准位置的状态下进行压缩比检测部的基准位置学习动作（S12）。 在发动机的运转中，即使由于通信错误等原因而使实际压缩比丧失（S13），或者即使实际压缩比与目标压缩比之间的差变得大于由于某些原因导致的假定偏差 异常（S14）时，立即执行基准位置学习操作（S15），由此能够快速返回到能够执行正常压缩比控制的状态。