公开(公告)号：KR1020030016704A

公开(公告)日：2003-03-03

申请号：KR1020010050401

申请日：2001-08-21

Applicant: 현대자동차주식회사

Inventor： 김정태

IPC: F01N1/02

CPC classification number: F01N1/161 ,  F01N2530/22

Abstract: PURPOSE: A device for reducing noise of a vehicle is provided to reduce noise by varying the resonance length to make a resonant frequency according to the pressure of inflow gas or air. CONSTITUTION: A resonance tube(2) is connected with a main tube(1) and the length between the ends of the resonance tube is a resonance length. A self varying deice(4) adjusts the resonant length to vary the range of resonant wavelength by the pressure to the resonant tube. Thereby, the length to form a resonant frequency is changed and noise is reduced.

Abstract translation: 目的：提供一种降低车辆噪音的装置，通过改变谐振长度，根据流入气体或空气的压力使谐振频率降低噪音。 构成：谐振管（2）与主管（1）连接，共振管的端部之间的长度为谐振长度。 自变型（4）调节谐振长度以通过谐振管的压力来改变谐振波长的范围。 由此，形成谐振频率的长度变化，噪声降低。

公开(公告)号：KR100326699B1

公开(公告)日：2002-06-29

申请号：KR1019970069780

申请日：1997-12-17

Applicant: 현대자동차주식회사

Inventor： 김정태

IPC: B60T8/00

Abstract: PURPOSE: A deciding method of a road surface at an ABS(Anti-Lock Brake System) control is provided to secure the stable braking distance by stably controlling braking pressure. CONSTITUTION: A frequency to generate braking force is counted when a braking control of front wheels is performed. In detecting braking force of rear wheels, the counted value is compared with preset standard values(S105). A controller decides as a tough road surface when the counted value is over a first standard value(S106). The controller decides as a normal road surface when the counted value is over a second standard value(S108). Otherwise, the controller decides as a fine road surface(S109). The controller controls a duty for driving an actuator according to speed of a vehicle, speed of wheels and the condition of the road surface. Thereby, the braking distance is reduced and the steering quality is improved.

公开(公告)号：KR1020020030352A

公开(公告)日：2002-04-25

申请号：KR1020000060946

申请日：2000-10-17

Applicant: 현대자동차주식회사

Inventor： 김정태

IPC: F01N1/00

Abstract: PURPOSE: A muffler of a vehicle is provided to tune low frequency at the range of exhaust booming noise by bending an end of an insertion pipe to a cavity and extending the bending part, and to improve driving experience by reducing noise. CONSTITUTION: A muffler for a vehicle is composed of a first pipe(32), a second pipe(34), a baffle(36), and an end plate(38) and an insertion pipe(40). The end of the insertion pipe is bent to a cavity(42), and a bending part(44) is formed with bending the insertion pipe and extending. The bending part is passed through the vertical center line of the muffler, and lengthened to satisfy a Helmholtz resonator. The bending part is formed in the insertion pipe, and supported with a supporting bracket between the second pipe and the bending part. Exhaust gas from the muffler is discharged to the second pipe through a first hole(46) and a second hole(48). Tuning is performed at low frequency regardless of the length of the insertion pipe in the muffler by bending the insertion pipe.

Abstract translation: 目的：提供车辆的消音器，通过将插入管的一端弯曲到腔体并延伸弯曲部分，通过减少噪音来改善驾驶体验，从而在排气繁忙的噪音范围内调节低频。 构成：用于车辆的消音器由第一管（32），第二管（34），挡板（36）和端板（38）和插入管（40）组成。 插入管的端部弯曲到空腔（42），弯曲部（44）形成为弯曲插入管并延伸。 弯曲部分通过消声器的垂直中心线，并延长以满足亥姆霍兹共振器。 弯曲部形成在插入管中，并且在第二管和弯曲部之间由支撑托架支撑。 来自消声器的废气通过第一孔（46）和第二孔（48）排出到第二管道。 通过弯曲插入管，无论消声器中的插入管的长度如何，低频进行调谐。

公开(公告)号：KR3002860310000S

公开(公告)日：2001-12-06

申请号：KR3020010001654

申请日：2001-01-14

Applicant: 현대자동차주식회사 ,  현대모비스 주식회사

Designer： 김정태

公开(公告)号：KR3002715210000S

公开(公告)日：2001-02-15

申请号：KR3019990032365

申请日：1999-12-31

Applicant: 현대자동차주식회사

Designer： 김정태

公开(公告)号：KR100267642B1

公开(公告)日：2000-10-16

申请号：KR1019960068699

申请日：1996-12-20

Applicant: 현대자동차주식회사

Inventor： 김정태

IPC: B60T8/00

Abstract: PURPOSE: A pressure control method of ABS control for a vehicle is provided to increase the ABS efficiency, by using a controller, which has only ON/OFF control function, so an ABS system is simplified and the cost is reduced. CONSTITUTION: A calculating step of imaginary vehicle deceleration is to calculate the imaginary vehicle deceleration through the regular operation as based on speed of a wheel. An operational step of index address is to operate the pertinent address of an index fixed previously from the imaginary vehicle deceleration. A fixing step of estimated increasing pressure time is to output the contents of index address and to fix the estimated increasing pressure time. An active step of increasing pressure control is to control the braking force by increasing the pressure of a brake as the increasing pressure time.

Abstract translation: 目的：提供车辆ABS控制的压力控制方法，通过使用仅具有ON / OFF控制功能的控制器来提高ABS效率，从而简化ABS系统并降低成本。 构成：虚拟车辆减速度的计算步骤是根据车轮速度计算通过正常操作的假想车辆减速度。 索引地址的操作步骤是操作先前从假想车辆减速度固定的索引的相关地址。 估计增加压力时间的固定步骤是输出索引地址的内容并固定估计的增加压力时间。 增加压力控制的主动步骤是通过增加压力时间来增加制动器的压力来控制制动力。

公开(公告)号：KR100267641B1

公开(公告)日：2000-10-16

申请号：KR1019960068698

申请日：1996-12-20

Applicant: 현대자동차주식회사

Inventor： 김정태

IPC: B60T8/66

Abstract: PURPOSE: A speed estimating method for ABS control of a vehicle is provided to exactly estimate a slip ratio and to improve the ABS efficiency, by calculating an estimated speed similar to a real speed from a speed of four wheels. CONSTITUTION: A maximum speed selective step is to select the maximum value among the values detected by a speed detecting sensors of four wheels and to calculate the first standard speed. A maximum speed filtering step is to calculate the second standard speed, whose the high frequency is removed by passing the first standard through a low pass filter whose cut-off frequency is f1. An acceleration calculating step is to calculate the first standard speed by differentiating the second standard speed. An acceleration filtering speed is to calculate the second standard speed, whose high frequency is removed by passing the first standard speed through a low pass filter, whose cut-off frequency is f2. A fixing step of estimated acceleration is to calculate the estimated acceleration by fixing the second standard acceleration when the second standard speed is higher than the current friction coefficient or fixing the current friction coefficient when the second standard speed is lower than the current friction coefficient. A calculating step of estimated vehicle speed is to calculate the estimated speed by integrating the estimated acceleration.

Abstract translation: 目的：提供一种用于车辆ABS控制的速度估计方法，以通过从四个车轮的速度计算类似于实际速度的估计速度来精确估计滑移率并提高ABS效率。 构成：最大速度选择步骤是选择由四个车轮的速度检测传感器检测的值中的最大值，并计算第一标准速度。 最大速度滤波步骤是计算通过使第一标准通过截止频率为f1的低通滤波器来去除高频的第二标准速度。 加速度计算步骤是通过微分第二标准速度来计算第一标准速度。 加速度滤波速度是计算通过使第一标准速度通过截止频率为f2的低通滤波器去除高频的第二标准速度。 估计加速度的定影步骤是当第二标准速度高于当前摩擦系数时固定第二标准加速度，或者当第二标准速度低于当前的摩擦系数时，固定当前摩擦系数，来计算估计加速度。 估计车速的计算步骤是通过对估计的加速度进行积分来计算估计速度。

公开(公告)号：KR100254345B1

公开(公告)日：2000-06-01

申请号：KR1019960068701

申请日：1996-12-20

Applicant: 현대자동차주식회사

Inventor： 김정태

IPC: B60T8/00

Abstract: PURPOSE: A slip rate changing and setting method maintains control effect over ABS(Anti Blocking System) even when the condition of road surface suddenly changes. CONSTITUTION: A method includes a car deceleration calculating step to get the deceleration(AV) of a car from the car speed(VV) and an appropriate slip rate calculating step to multiply the deceleration of the car(AV) by a fixed constant(K1) and add another fixed constant(K2) to get the appropriate slip rate(λ') where K1=-12.5±2.5 and K2=2.5±1.5 to change the setting up range of the slip rate which should be maintained in changed environment using the fact that the deceleration(AV) of the car is changed by the frictional coefficient with road surface.

Abstract translation: 目的：即使在路面状况突然变化的情况下，滑差变化和设定方法也可以保持对ABS（防堵系统）的控制效果。 构成：一种方法，包括从轿厢速度（VV）获得轿厢的减速度（AV）的轿厢减速度计算步骤和将轿厢（AV）的减速度乘以固定常数（K1）的适当的滑差率计算步骤 ），并添加另一个固定常数（K2）以获得适当的滑移率（λ'），其中K1 = -12.5±2.5和K2 = 2.5±1.5，以改变应在变化的环境中保持的滑移率的设置范围 汽车的减速度（AV）由路面的摩擦系数改变的事实。

公开(公告)号：KR100242102B1

公开(公告)日：2000-03-02

申请号：KR1019960059350

申请日：1996-11-29

Applicant: 현대자동차주식회사

Inventor： 김정태

IPC: B60T8/32

Abstract: 본 발명은 자동차의 제동력제어시스템(ABS : Anti-Blocking System)의 제어에 관한 것으로, 특히 제동압력을 증압, 감압, 또는 보압이 가능한 조절기(3-STATE Modulator)를 이용한 압력제어방법을 제공하는 것을 목적으로 한다.
본 발명은 전술한 목적실현을 위한 수단으로 차량의 각 차륜으로부터 차륜의 회전속력을 구하고, 이로부터 차량의 현재 슬립률과 차륜가속도를 연산하며, 이를 지속적으로 관찰하여 차륜의 제동기간 중 차륜의 브레이크 휠 실린더의 제동압을 증압, 감압, 또는 보압 중 어느 상태로 제어하는 제동력 제어시스템의 압력 제어방법에 있어서, 증압모드에서는 차체속도와 차체감속도를 이용하여 한 스탭에서의 증압시간(P1)을 정하고, 이전 사이클에서의 실제증압시간과 현재사이클에서의 실제 감압시간을 이용하여 예측증압시간(P2)을 정하고, 상기 정보(P1)(P2)를 이용하여 한 스텝에서의 압력유지기간(P3)을 정하여 증압제어를 행하고;
감압모드에서는 차륜의 속력이 증가하면 단계적감압을 실시하고, 차륜의 속력이 감소하면 연속감압을 실시하도록 감압제어를 행하는 것을 특징으로 하는 자동차용 제동력제어시스템의 압력제어방법을 제공하여 차량의 제동시의 제동효과를 향상시키도록한다.

公开(公告)号：KR100242100B1

公开(公告)日：2000-03-02

申请号：KR1019960054277

申请日：1996-11-15

Applicant: 현대자동차주식회사

Inventor： 김정태

IPC: B60T8/00

Abstract: 본 발명은 자동차의 제동력제어시스템(ABS:Anti-Blocking System)에 관한 것으로, 차량이 저마찰노면에서 고마찰 노면으로 돌입하게 되는 경우(Low/High Jump), 이러한 상태를 정확하고도 빠르게 판단하여 오류없이 제동거리를 줄이도록 하는 제동력 제어시스템의 노면 점프 판단방법을 제공하는 것을 목적으로 한다.
본 발명은 차륜의 제동력을 제어하는 제동력 제어시스템의 제어방법에 있어서, 상기 슬립률(λ)이 기준슬립률(λ
K1 ) 보다 작으며 차륜의 가속도(A)는 기준가속도(A
K1 ) 보다 크거나, 이전 제어사이클에서의 증압기간(T
pr ) 보다 현재의 증압시간(T
r )이 기준값(T
K1 ) 이상으로 큰 경우로서 현재의 슬립률(λ)이 기준슬립률(λ
K2 )보다 작거나, 증압기간 중 차륜의 현재가속도(A)가 기준가속도의 범위내(A
k3 에서 A
k2 )에서 머무르고 있는 기간(T
a )이 기준기간(T
K2 ) 보다 큰 경우로서 현재의 슬립률(λ)이 기준슬립률(λ
K2 )보다 작으면, 저마찰계수 노면에서 고마찰계수 노면의 점프한 것으로 판단하는 것을 특징으로 하는 제동력 제어시스템의 노면 점프 판단방법을 제공하여, 종래의 슬립률과 차륜의 가속도만을 관찰하는 판단방법의 오류를 극복하고 보다 정확한 노면의 현재상태를 판단할 수 있게 되어 제동시 노면의 상태가 변화하더라도 효율적인 제동력제어를 할 수 있게 되었다.