会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 82. 发明授权
    • Cold start fuel control system
    • 冷启动燃油控制系统
    • US5482023A
    • 1996-01-09
    • US364893
    • 1994-12-27
    • Frank W. HuntToshiharu Nogi
    • Frank W. HuntToshiharu Nogi
    • F02D41/00F02D41/06F02M25/08F02M53/06F02M69/04F02M69/08F02M69/32F02M33/02F02M51/00
    • F02D41/003F02D41/0035F02D41/064F02M25/08F02M53/06F02M69/044F02M69/08F02M69/325
    • A cold start fuel control system as provided for an internal combustion engine of the type having at least one combustion chamber, an intake manifold and a source of fuel. A fuel vapor canister has an interior chamber fluidly connected to the source of fuel and a normally closed shut-off valve fluidly connected between the canister and ambient air. A normally closed purge valve is then fluidly connected in series between the interior of the canister and the intake manifold. The system also includes a cold start fuel injector having an inlet connected to the fuel source and an outlet open to the intake manifold or, optionally, to the interior of the fuel vapor canister. During a cold start engine condition, fuel is supplied as needed from both the fuel vapor canister and cold start injector by activating the cold start injector and simultaneously opening the purge and shut-off valves in synchronism with the engine intake cycle(s). An air flow sensor measures the mass flow of the air/fuel mixture to the engine and provide an output signal to an electronic control unit which controls the activation of the cold start fuel injector and/or valves to achieve a stoichiometric or slightly lean air/fuel mixture. Additionally, secondary air is provided through the cold start fuel injector for enhancing the atomization of the fuel in the air from the cold start injector.
    • 一种用于具有至少一个燃烧室,进气歧管和燃料源的类型的内燃机的冷启动燃料控制系统。 燃料蒸汽罐具有流体连接到燃料源的内部室和流体连接在罐和环境空气之间的常闭截止阀。 然后将常闭的净化阀在罐的内部和进气歧管之间串联流体连接。 该系统还包括冷启动燃料喷射器,其具有连接到燃料源的入口和通向进气歧管的出口,或者可选地,连接到燃料蒸气罐的内部。 在冷启动发动机状态下,通过启动冷启动喷射器并同时与发动机进气循环同步地打开吹扫阀和截止阀,根据需要从燃料蒸汽罐和冷启动喷射器供应燃料。 空气流量传感器测量空气/燃料混合物到发动机的质量流量,并向电子控制单元提供输出信号,该控制单元控制冷起动燃料喷射器和/或阀的启动,以实现化学计量或稍微贫瘠的空气/ 燃料混合物 此外,通过冷启动燃料喷射器提供二次空气,用于增强来自冷启动喷射器的空气中的燃料的雾化。
    • 83. 发明授权
    • Internal combustion fuel control system
    • 内燃燃油控制系统
    • US5465701A
    • 1995-11-14
    • US172749
    • 1993-12-27
    • Frank Hunt
    • Frank Hunt
    • F02D41/06F02M69/04F02M69/30F02M23/00
    • F02D41/3094F02D41/064F02M69/044F02M69/30F02D2041/3088
    • A fuel control system is provided for an internal combustion engine having at least one combustion chamber, an intake air passageway, a multipoint fuel injector associated with each engine combustion chamber and a cold start fuel injector having a fuel outlet open to the intake air passageway. An air valve has an air inlet fluidly connected to the intake air passage and an air outlet fluidly connected to the cold start fuel injector. This air valve movable between an open position and a closed position where in the open position, air flow through the air valve is directed to the cold start fuel injector. During a cold start engine operating condition, air flow through the air valve and cold start fuel injector enhances fuel atomization of the fuel from the cold start fuel injector thereby reducing the desirable engine emissions, and particularly, hydrocarbon engine emissions.
    • 提供一种用于内燃机的燃料控制系统,该内燃机具有至少一个燃烧室,进气通道,与每个发动机燃烧室相关联的多点燃料喷射器和具有通向进气通道开口的燃料出口的冷启动燃料喷射器。 空气阀具有流体连接到进气通道的空气入口和与冷启动燃料喷射器流体连接的空气出口。 该空气阀可在打开位置和关闭位置之间移动,在打开位置,空气流过空气阀的空气被引导到冷启动燃料喷射器。 在冷启动发动机运行状态下,通过空气阀和冷启动燃料喷射器的气流增加了来自冷启动燃料喷射器的燃料的燃料雾化,从而减少了期望的发动机排放,特别是碳氢化合物发动机排放。
    • 86. 发明授权
    • Steerable antenna and receiver interface for terrestrial broadcast
    • 用于地面广播的可导向天线和接收器接口
    • US07425920B2
    • 2008-09-16
    • US11346643
    • 2006-02-03
    • John G. N. HendersonCarl Scarpa
    • John G. N. HendersonCarl Scarpa
    • H01Q3/24
    • H01Q1/007H01Q1/24H01Q3/2611H01Q7/005
    • Antennas with steerable antenna patterns and techniques for using such antennas are described. In accordance with the invention, antenna patterns with one or more NULLs are used. Through the use of digital control signals the antenna pattern is steered so that a source of signal interference, e.g., a multipath signal, will be located in a NULL. In this manner the received signal's S/N ratio can be maximized thereby facilitating demodulation. The techniques of the invention can be applied to television, computer devices, mobile devices and a wide range of other systems. Digital commands to control an antenna may include multiple information fields, e.g., a direction field, a channel field, a gain field and a polarity field. Antennas incapable of supporting the specified fields disregard information in fields which are not supported. Information in each supported field is decoded and used to adjust the corresponding antenna characteristic.
    • 描述了具有可导向天线方向图和使用这种天线的技术的天线。 根据本发明,使用具有一个或多个NULL的天线方向图。 通过使用数字控制信号,导航天线方向图,使得诸如多路径信号的信号干扰源将位于空值中。 以这种方式,可以使接收信号的S / N比最大化,从而便于解调。 本发明的技术可以应用于电视,计算机设备,移动设备以及各种其它系统。 用于控制天线的数字命令可以包括多个信息字段,例如方向字段,信道字段,增益字段和极性字段。 无法支持指定字段的天线无视不支持的字段中的信息。 每个支持的字段中的信息被解码并用于调整相应的天线特性。
    • 88. 发明授权
    • Implementation of an inverse discrete cosine transform using single instruction multiple data instructions
    • 使用单指令多数据指令实现反离散余弦变换
    • US07020671B1
    • 2006-03-28
    • US09531607
    • 2000-03-21
    • Arindam Saha
    • Arindam Saha
    • G06F17/14
    • G06F17/147G06T9/007
    • Compressed data are decompressed using an inverse discrete cosine transform (IDCT). A first one directional (1D) IDCT is performed resulting in a plurality of first 1D IDCT coefficients followed by a second 1D IDCT resulting in a plurality of second 1D IDCT coefficients. In performing the first 1D IDCT and the second 1D IDCT a first plurality of intermediate butterfly computations are performed which include performing a plurality of intermediate multiplications resulting in a plurality of initial products and performing a plurality of intermediate additions resulting in intermediate product which are maintained at no more than 16-bits utilizing a round near positive (RNP) rounding scheme. Following the second 1D IDCT a rounding and shifting of the plurality of second 1D IDCT coefficients is performed utilizing a round away from zero (RAZ) rounding scheme resulting in a plurality of output coefficients which comply with the IEEE 1180 standard.
    • 使用逆离散余弦变换(IDCT)对压缩数据进行解压缩。 执行第一单向(1D)IDCT,导致多个第一1DIDCT系数,随后是导致多个第二1D IDCT系数的第二1DIDCT。 在执行第一1DIDCT和第二1DIDCT时,执行第一多个中间蝶形运算,其包括执行多个中间乘法,得到多个初始乘积并执行多个中间加法,导致中间乘积维持在 不超过16位,使用圆形接近正(RNP)舍入方案。 在第二1D IDCT之后,使用从零(RAZ)舍入方案的圆形执行多个第二1D IDCT系数的舍入和移位,导致符合IEEE 1180标准的多个输出系数。
    • 90. 发明授权
    • Methods and apparatus for implementing and controlling a digital
modulator
    • 用于实现和控制数字调制器的方法和装置
    • US5978823A
    • 1999-11-02
    • US789437
    • 1997-01-27
    • Joshua L. KoslovFrank A. LaneCarl G. Scarpa
    • Joshua L. KoslovFrank A. LaneCarl G. Scarpa
    • H03H17/00H04L27/20G06F17/17
    • H04L27/2071
    • Methods and apparatus for converting a relatively low frequency signal, e.g., a 1.5 MHz signal, to a high frequency signal, e.g., a 30-100 MHz signal, in the digital domain without the need for a digital mixer operating at the high frequency are described. The high frequency represents, e.g., the ultimate digital to analog conversion frequency. In accordance with the present invention an interpolation technique is used to convert the low rate digital signal to a high rate signal and to shift the carrier to a desired frequency. This is accomplished, by first positioning the information signal, e.g., the digital waveform to be modulated on a carrier at a relatively low rate using a digital mixer operating at a fraction of the ultimate digital to analog conversion frequency. The relatively low rate signal generated by the mixing operation is then converted to a high rate signal by one or more interpolator stages. An adjustable passband filter circuit is included in each interpolation stage. In one embodiment, the adjustable passband filter circuits are implemented using a fixed frequency filter preceded and followed by frequency shifting circuits which are used to upshift and then downshift the signal being filtered. By controlling the frequency shifting adjustable filter circuits are achieved via the use of fixed filters. One feature of the present invention is directed to a control circuit which is response to an H bit frequency control word representing a desired output carrier frequency.
    • 用于将相对低频信号(例如1.5MHz信号)转换成数字域中的高频信号(例如,30-100MHz信号)而不需要以高频工作的数字混频器的方法和装置 描述。 高频表示例如最终的数模转换频率。 根据本发明,使用内插技术将低速率数字信号转换为高速率信号并将载波移位到期望的频率。 这是通过使用以最终数模转换频率的一小部分操作的数字混频器首先定位信息信号,例如以较低速率调制在载波上的数字波形。 然后由混合操作产生的相对较低的速率信号通过一个或多个内插器级转换成高速率信号。 每个插补级包含可调整通带滤波电路。 在一个实施例中,可调节通带滤波器电路使用在频移电路之前和之后的固定频率滤波器来实现,所述频移电路用于升档,然后降档正被滤波的信号。 通过控制频移可调滤波器电路是通过使用固定滤波器实现的。 本发明的一个特征是针对表示期望输出载波频率的H位频率控制字的响应的控制电路。