摘要:
A continuously variable valve lift device may include a vibration link having one end eccentrically and rotatably coupled to a rotation shaft, a rocker arm having a middle portion pivotally coupled to the other end of the vibration link, an advance lever having one end coupled to the one end of the rocker arm to select advance or delay, a swivel cam link having one end pivotally coupled to the other end of the rocker arm, and a swivel cam, one end of which is pivotally coupled to the other end of the swivel cam link and the other end of which is pivotally coupled to a stationary shaft to open and close a valve.
摘要:
The CVVL device includes a rocking cam having a rolling face contacting a rocker arm is formed to press the rocker arm when pivoted, a rocking roller, which is disposed above the drive cam and rolls on an outer circumference of the drive cam, a control apparatus, which changes a position of the rocking roller rolling on the outer circumference of the drive cam; and a rocking apparatus, which pivots the rocking cam according to a position of the rocking roller such that a position where the rocker arm is contacted with the rolling face is changed depending on the position of the rocking roller.
摘要:
There are provided a photosensitive polymer and a photoresist compositing containing the same. The photosensitive polymer is represented by the following formula: wherein R1 is an acid-labile tertiary alkyl ester group, R2 is hydrogen atom, methyl, ethyl, carboxyl, &ggr;-butyrolactone-2-yl ester, &ggr;-butyrolactone-3-yl ester, pantolactone-2-yl ester, mevalonic lactone ester, 3-tetrahydrofuranyl ester, 2,3-propylenecarbonate-1-yl ester, 3-methyl-&ggr;-butyrolactone-3-yl ester or C3 to C20 alicyclic hydrocarbon, a/(a+b+c) is 0.1˜0.7, b/(a+b+c) is 0.1˜0.8, c/(a+b+c) is 0.0˜0.8, and n is an integer in the range of 0 to 2.
摘要翻译:提供光敏聚合物和含有它的光致抗蚀剂复合物。 光敏聚合物由下式表示:其中R1是酸不稳定的叔烷基酯基,R2是氢原子,甲基,乙基,羧基,γ-丁内酯-2-基酯,γ-丁内酯-3-基酯 ,泛酸内酯-2-基酯,甲羟戊酸内酯,3-四氢呋喃基酯,2,3-亚丙基碳酸酯-1-基酯,3-甲基-γ-丁内酯-3-基酯或C 3至C 20脂环族烃,a /( a + b + c)为0.1〜0.7,b /(a + b + c)为0.1〜0.8,c /(a + b + c)为0.0〜0.8,n为0〜 2。
摘要:
A continuously variable valve lift device of an engine may include a cam shaft having an eccentric cam formed on an outer peripheral surface of the cam shaft so that an oscillating outer-race wheel is coupled to and oscillatable along the eccentric cam, an output cam being rotably fitted to the cam shaft, a sliding shaft for varying the position of the output cam by moving straightly in a front and rear direction according to an engine operating condition, in which the sliding shaft has a deviation adjustment member which is formed to be eccentric toward an outer peripheral surface thereof, and a rocker arm rotably fitted to the deviation adjustment member and one end of which is rotably connected to the oscillating outer-race wheel and the other end of which is rotably engaged with the output cam.
摘要:
A continuously variable valve lift device for a vehicle is provided, which includes a drive shaft rotating in association with a crank shaft and having a drive cam formed on an outer periphery thereof, a locker arm shaft provided apart from the drive shaft and having one end that supports a rocker arm rotating and rocking in association with the drive cam, output cams rotatably installed on the drive shaft to interlock with the other end of the rocker arm, and a variable drive part straightly moving the rocker arm shaft in a vertical direction of the rocker arm shaft to vary a valve lift. When a valve is shifted from the high-lift state to the low-lift state, a pumping loss is reduced to improve the fuel consumption ratio. Also, since an advance function is provided, an exhaust-side CVVT can be deleted to greatly reduce the manufacturing cost.
摘要:
The CVVL device includes a rocking cam having a rolling face contacting a rocker arm is formed to press the rocker arm when pivoted, a rocking roller, which is disposed above the drive cam and rolls on an outer circumference of the drive cam, a control apparatus, which changes a position of the rocking roller rolling on the outer circumference of the drive cam; and a rocking apparatus, which pivots the rocking cam according to a position of the rocking roller such that a position where the rocker arm is contacted with the rolling face is changed depending on the position of the rocking roller.
摘要:
A photosensitive polymer which maintains transparency even when exposed to a short-wavelength light source of 193 nm or below, exhibits improved adhesiveness to a substrate, improved contrast and improved resistance to dry etching. The photosensitive polymer includes a first monomer which is alicyclic hydrocarbon carboxylate having an acid-labile C6 to C20 tertiary alicyclic hydrocarbon group as a substituent, and a second monomer which is capable of free radical polymerization.
摘要:
A photosensitive polymer having a main chain consisting of only norbornene-type alicyclic units, a resist composition containing the photosensitive polymer and a preparation method thereof, wherein the photosensitive polymer is represented by the following formula: wherein R1 is an acid-labile tertiary alkyl group, R2 is &ggr;-butyrolactone-2-yl, &ggr;-butyrolactone-3-yl, pantolactone-2-yl, mevalonic lactone, 3-tetrahydrofuranyl, 2,3-propylenecarbonate-1-yl or 3-methyl-&ggr;-butyrolactone-3-yl, R3 is a hydrogen atom, methyl, ethyl or C3 to C20 alicyclic hydrocarbon, and p/(p+q+r) is 0.1˜0.8, q/(p+q+r) is 0.2˜0.8, and r/(p+q+r) is 0.0˜0.4. To prepare the photosensitive polymer, at least two different norbornene-type compounds having an ester group as a substituent are reacted in the presence of an initiator at a temperature of about 120 to about 150 ° C. without a reaction catalyst.
摘要:
A variable valve lift apparatus may include an input unit, a control link disposed to a control shaft, a driving cam that is provided with a contact portion and pivotally disposed to the control shaft, a valve opening unit that contacts the contact portion and is opened and closed in accordance with pivoting of the driving cam, wherein the control link, the input unit and the driving cam are connected by a connecting unit, and contact positions of the valve opening unit and the contact portion are variable according to a relative rotation angle of the control link around the control shaft.
摘要:
A system and method for controlling a data flow between data buses having different characteristics includes a first bus, a first interface coupled to the first bus, a second bus, a second interface coupled to the second bus, a byte selection unit coupled to the first and second interfaces and transferring data from the first interface to the second interface, or from the second interface to the first interface according to a control signal, and a byte selection control unit storing a plurality of byte selection data and generating at least one of the plurality of byte selection data to the byte selection unit as the control signal. Each byte selection data representing a predetermined byte location.