公开(公告)号：US20130068185A1

公开(公告)日：2013-03-21

申请号：US13618550

申请日：2012-09-14

Applicant: Kentaro MIKAWA

Inventor： Kentaro MIKAWA

IPC: F01L1/04

CPC classification number: F01L1/04 ,  F01L1/352 ,  F01L2820/032 ,  F02D41/009 ,  F02D2041/001 ,  F02D2250/06 ,  Y02T10/142

Abstract: Even when a crankshaft reversely rotates, a rotation phase of a camshaft can be accurately detected. A motor shaft rotation angle, a crankshaft forward rotation angle, a crankshaft reverse rotation angle, a final crankshaft rotation angle, a sprocket rotation angle of an electric VTC where a sprocket rotates at ½ rotation speed of the crankshaft and a stator of an electric motor are integrally rotated, a motor shaft rotation angle changing amount during a control period, a sprocket rotation angle changing amount, a motor shaft rotation angle changing amount, an intake camshaft rotation angle changing amount, and a current real rotation angle of the intake camshaft are calculated sequentially, and the VTC manipulated variable is computed so that the VTC real angle follows a VTC target angle.

Abstract translation: 即使当曲轴反向旋转时，也能够精确地检测凸轮轴的旋转相位。 电机轴旋转角度，曲轴正转角度，曲轴反转角度，最终曲轴旋转角度，链轮以曲轴的1/2转速旋转的电VTC的链轮旋转角度和电动机的定子 一体旋转，控制期间的电动机轴旋转角度变化量，链轮旋转角度变化量，电动机轴旋转角度变化量，进气凸轮轴旋转角度变化量和进气凸轮轴的当前实际旋转角度分别为 并且计算VTC操作变量，使得VTC实角遵循VTC目标角度。

公开(公告)号：US20130080027A1

公开(公告)日：2013-03-28

申请号：US13615733

申请日：2012-09-14

Applicant: Kentaro MIKAWA

Inventor： Kentaro MIKAWA

IPC: F01L1/344

CPC classification number: F02D41/009 ,  F01L1/344 ,  F01L1/352 ,  F01L2820/032 ,  F02D13/0238 ,  F02D2041/0095 ,  F02N19/004 ,  F02N2019/008 ,  Y02T10/142 ,  Y02T10/18 ,  Y02T10/42

Abstract: Valve timing is held to a position close to a target value as much as possible while suppressing control errors of valve timing even though a crankshaft rotates in reverse. In an internal combustion engine which controls the valve timing by a variable valve timing mechanism (an electric VTC) driven by an electric motor, an intake valve timing is controlled after an output of an engine stop command such that: when the engine rotates in a forward direction, a real valve timing (a VTC real angle θr) detected by a sensor is converged to a target valve timing (a VTC target angle θtrg) advanced for the time of start; and when the engine rotates in a reverse direction, a manipulated variable of the electric VTC is set so that the VTC real angle θr is held to the VTC real angle θr detected just before the detection of the reverse rotation.

Abstract translation: 即使曲轴相反地旋转，也能尽可能地将气门正时保持在靠近目标值的位置，同时抑制气门正时的控制误差。 在通过由电动机驱动的可变气门正时机构（电VTC）来控制气门正时的内燃机中，在发动机停止指令输出后控制进气门正时，使得当发动机转速为 传感器检测到的实际气门正时（VTC实角＆amp; t）r被收敛到启动时提前的目标气门正时（VTC目标角＆amp; ttg）; 并且当发动机沿相反方向旋转时，设置电VTC的操纵变量，使得VTC实角＆amp; t被保持为在检测到反向旋转之前的VTC实际角度; r被检测到。