Engine starting and warm-up fuel control method having low volatility fuel detection and compensation
    1.
    发明授权
    Engine starting and warm-up fuel control method having low volatility fuel detection and compensation 有权
    发动机启动和预热燃料控制方法具有低挥发性燃油检测和补偿

    公开(公告)号:US06655358B2

    公开(公告)日:2003-12-02

    申请号:US09952012

    申请日:2001-09-13

    IPC分类号: F02D4106

    摘要: An improved engine fuel control detects combustion instability due to the use of high DI fuel during cold start and warm-up and compensates the fuel control for detected combustion instability through temporary enrichment of the delivered air/fuel ratio. When the engine idle speed error magnitude is less than a calibrated threshold, usage of high DI fuel is detected by identifying a surge signal based on the engine speed error fluctuation in a predetermined frequency range attributable to combustion instability due to the presence of high DI fuel in a cold engine. When the average amplitude of the surge signal exceeds a calibrated surge threshold, the presence of high DI fuel is detected. Additionally, the method is disabled for a prescribed period following commanded load transitions associated with the air conditioning system and the automatic transmission.

    摘要翻译: 改进的发动机燃料控制由于在冷启动和预热期间使用高DI燃料来检测燃烧不稳定性,并且通过临时浓缩所输送的空气/燃料比来补偿燃料控制以检测燃烧不稳定性。 当发动机怠速转速误差幅度小于校准阈值时,通过基于由于高DI燃料的存在引起的燃烧不稳定性的预定频率范围内的发动机速度误差波动来识别浪涌信号来检测高DI燃料的使用 在冷的发动机。 当浪涌信号的平均幅度超过校准浪涌阈值时,检测到高DI燃料的存在。 此外,在与空调系统和自动变速器相关联的命令负载转换之后,该方法被禁用规定的时间段。

    Engine cold start fuel control method having low volatility fuel detection and compensation
    2.
    发明授权
    Engine cold start fuel control method having low volatility fuel detection and compensation 失效
    发动机冷启动燃料控制方法具有低挥发性燃料检测和补偿

    公开(公告)号:US06588409B2

    公开(公告)日:2003-07-08

    申请号:US10035141

    申请日:2001-09-13

    IPC分类号: F02D4106

    摘要: An improved engine fuel control detects combustion instability due to the use of high driveability index (DI) fuel during cold start and warm-up and compensates the fuel control for detected combustion instability through temporary enrichment of the delivered air/fuel ratio. The usage of high DI fuel is detected during engine cranking by measuring the time required for the engine speed to increase from a lower reference speed to an upper reference speed, provided the engine run time is less than a calibrated value. A timer is started when the lower reference speed is achieved, and the timer value is compared to a crank time threshold determined as a function of the initial engine coolant temperature. If the timer value exceeds the crank time threshold before the engine speed reaches the upper reference speed, the presence of high DI fuel is indicated, and the air/fuel ratio is temporarily enriched.

    摘要翻译: 改进的发动机燃料控制由于在冷启动和预热期间使用高驱动性指数(DI)燃料来检测燃烧不稳定性,并且通过临时浓缩所输送的空气/燃料比来补偿燃料控制以检测燃烧不稳定性。 如果发动机运行时间小于校准值,则通过测量发动机转速从较低基准速度增加到较高参考速度所需的时间,可以在发动机起动期间检测到高DI燃料的使用。 当实现较低的参考速度时,启动定时器,并将定时器值与根据初始发动机冷却剂温度确定的曲柄时间阈值进行比较。 如果在发动机转速达到上限参考速度之前定时器值超过曲轴时间阈值,则表示存在高DI燃料,空气/燃料比暂时变浓。

    Altitude simulator for dynamometer testing
    4.
    发明授权
    Altitude simulator for dynamometer testing 失效
    用于测功机测试的海拔模拟器

    公开(公告)号:US06561014B1

    公开(公告)日:2003-05-13

    申请号:US09694078

    申请日:2000-10-20

    IPC分类号: G01M1500

    CPC分类号: G01M15/00 F01N11/00 G01M15/02

    摘要: A method and apparatus for conducting dynamometric testing of an internal combustion engine at a test site under a simulated atmospheric pressure that differs substantially from an actual ambient atmospheric pressure existing at the test site. The internal combustion engine has an air inlet for supplying an intake airflow for combustion within the internal combustion engine and an exhaust outlet for exhausting an exhaust flow exiting from the internal combustion engine. The method includes the steps of subjecting the air inlet to the simulated atmospheric pressure, subjecting the exhaust outlet to the simulated atmospheric pressure and operating the internal combustion engine while both of the air inlet and the exhaust outlet are subjected to the simulated atmospheric pressure. The apparatus includes an exhaust pressure controller for maintaining the exhaust outlet of the internal combustion engine substantially equal to a determined exhaust pressure during operation of the internal combustion engine and an intake pressure controller for maintaining the air inlet of the internal combustion engine substantially equal to a determined intake pressure during operation of the internal combustion engine.

    摘要翻译: 一种用于在模拟大气压力下在试验部位进行内燃机的测力试验的方法和装置,其显着不同于存在于试验现场的实际环境大气压力。 内燃机具有用于在内燃机内供给用于燃烧的进气气流的空气入口和用于排出从内燃机排出的排气流的排气口。 该方法包括以下步骤:对空气入口进行模拟的大气压力,使排气出口达到模拟的大气压力,并且在空气入口和排气出口都受到模拟的大气压力的同时操作内燃机。 该装置包括排气压力控制器,用于在内燃机的运行期间将内燃机的排气出口基本上等于确定的排气压力,以及用于将内燃机的进气口保持在基本上等于 确定内燃机运转中的进气压力。

    Flow-based control method for an engine control valve
    5.
    发明授权
    Flow-based control method for an engine control valve 失效
    一种用于发动机控制阀的基于流量的控制方法

    公开(公告)号:US06293267B1

    公开(公告)日:2001-09-25

    申请号:US09532431

    申请日:2000-03-23

    IPC分类号: F02M2507

    摘要: An improved control methodology for an engine control valve, in which the valve is positioned in response to a commanded flow rate of the controlled medium. The method involves a valve characterization procedure in which the actual flow rate is measured for various combinations of valve position and pressure ratio across the valve, subject to a standard set of upstream pressure and temperature values. This results in a table of valve position in terms of pressure ratio and standard flow rate—that is, flow rate under the standard upstream pressure and temperature values. In operation, a controller addresses the table to obtain the desired valve position as a function of a determined pressure ratio across the valve, and a desired standard flow rate determined based on the commanded flow rate and the pressure and temperature of the controlled medium upstream of the valve, relative to the standard pressure and temperature values. The required calibration effort is significantly reduced compared to the usual ad-hoc approach, and the control is based on the physical characteristics of the valve so that the commanded flow rate can be scheduled based on engine control considerations. Additionally, the control is modular in nature, which minimizes the re-design and re-calibration efforts required due to changes in system design.

    摘要翻译: 一种用于发动机控制阀的改进的控制方法,其中阀被响应于受控介质的指令流量而定位。 该方法涉及阀门表征程序,其中针对阀门的阀位置和压力​​比的各种组合来测量实际流速,受制于一组标准的上游压力和温度值。 这就产生了压力比和标准流量 - 即在标准上游压力和温度值下的流量的阀门位置表。 在操作中,控制器处理该表以获得所需阀位置,作为跨过该阀的确定的压力比的函数,以及基于所指示的流量和受控介质的压力和温度确定的期望标准流量 阀门相对于标准压力和温度值。 与通常的ad-hoc方法相比,所需的校准工作量显着降低,并且控制基于阀的物理特性,使得可以基于发动机控制考虑来调度指令流量。 此外,该控件本质上是模块化的,这最大限度地减少了由于系统设计的变化所需的重新设计和重新校准工作。

    Internal combustion engine control with model-based barometric pressure
estimator
    6.
    发明授权
    Internal combustion engine control with model-based barometric pressure estimator 失效
    使用基于模型的大气压力估计器进行内燃机控制

    公开(公告)号:US6016460A

    公开(公告)日:2000-01-18

    申请号:US174234

    申请日:1998-10-16

    IPC分类号: F02D41/18 F02D41/32 F02D45/00

    摘要: An improved engine control utilizes a model-based technique to obtain an accurate estimate of barometric pressure with significantly reduced calibration time and effort. A mathematical model of mass air flow through the engine intake system is used to estimate the pressure ratio across the intake system as a function of mass air flow, the effective intake area, and the intake air pressure and temperature. The barometric pressure is then determined from the estimated ratio, and used in the calculation of various gas flows for control purposes. The mass air flow information may be provided by a mass air flow sensor, or alternatively, may be determined based on engine flow rate estimations. Because the estimation is model-based, no special calibration is needed to ensure accuracy at high altitudes.

    摘要翻译: 改进的发动机控制利用基于模型的技术来获得大气压力的准确估计,并显着缩短校准时间和精力。 使用通过发动机进气系统的质量空气流量的数学模型来估计进气系统中的压力比作为质量空气流量,有效进气面积和进气压力和温度的函数。 然后从估计的比率确定大气压力,并用于计算各种气体流量以用于控制目的。 质量空气流量信息可以由质量空气流量传感器提供,或者可以基于发动机流量估计来确定。 因为估计是基于模型的,所以不需要特殊的校准来确保在高海拔地区的准确性。

    Method of separation of backbone part of fish and device therefor
    7.
    发明授权
    Method of separation of backbone part of fish and device therefor 有权
    鱼骨架部分分离方法及装置

    公开(公告)号:US07988542B1

    公开(公告)日:2011-08-02

    申请号:US12945336

    申请日:2010-11-12

    IPC分类号: A22C18/00

    CPC分类号: A22C25/16

    摘要: To obtain a quality-meat-attached backbone part suitable as a material for minced fish the invention proposes cutting off a fin part and a kidney from a meat-attached backbone part obtained when filleting a fish into three pieces. The meat-attached backbone part is conveyed by a pair of upper and lower conveyor belts while being sandwiched and held between the belts. When the backbone part reaches a fin cutter arranged in a midstream of the conveyance, a belly part is pushed by a first pushing lever while a back part of the meat-attached backbone part is received and stopped by a receiving and stopping lever, and the back skin from a back fin to a tail fin is cut off by the fin cutter. Then, when the meat-attached backbone part reaches a kidney cutter, the belly part of the meat-attached backbone part is pushed by a second pushing lever to position the kidney-attached backbone section of the meat-attached backbone part at a cutting position by a kidney cutter. The kidney-attached backbone section is cut off by the kidney cutter to obtain the quality-meat-attached backbone part.

    摘要翻译: 为了获得适合作为切碎鱼的材料的优质肉附着骨架部分,本发明提出从将鱼鱼切成三片时获得的肉附着骨架部分切掉鳍部分和肾。 带肉的骨架部分被一对上下传送带输送,同时被夹持并保持在带之间。 当骨干部分到达布置在输送器中间的翅片切割器时,腹部被第一推杆推动,而附着骨肉部分的后部由接收和停止杆接收和停止,并且 背鳍从背鳍到尾鳍被切片切割。 然后,当肉附着骨架部分到达肾切割器时,肉附着骨架部分的腹部被第二推杆推动,将附着骨肉部分的肾附着骨干部分定位在切割位置 由肾切割机。 通过肾切割器切断肾附着骨架部分,得到优质肉附着骨架部分。

    Engine fuel control with mixed time and event based A/F ratio error estimator and controller
    8.
    发明授权
    Engine fuel control with mixed time and event based A/F ratio error estimator and controller 失效
    具有混合时间和事件的A / F比误差估计器和控制器的发动机燃料控制

    公开(公告)号:US06233922B1

    公开(公告)日:2001-05-22

    申请号:US09447613

    申请日:1999-11-23

    IPC分类号: F02D4114

    摘要: An improved closed-loop feedback fuel control with a model-based A/F ratio estimator, wherein the estimator, controller and portions of the model are updated on a fixed time interval basis, thereby minimizing the impact of the control on event-based throughput. Engine transport delays and oxygen sensor dynamics are modeled to estimate the sensed A/F ratio, and the estimate is compared with the sensed A/F ratio to adaptively adjust the model and to develop a closed-loop adjustment of the commanded fuel amount. The engine transport delay model is carried out on an engine event basis, but the sensor dynamics model is carried out on a time basis to accurately reflect the analog nature of the sensor. The estimator and the controller are also carried out on a time basis to reduce throughput requirements at higher engine speeds, and the control gain is scheduled to account for differences between the engine event and time update rates. The control enables numerous control enhancements, including flexibility to topology variations (such as sensor placement, sensor type and sensor characteristics), ease of calibration, and the ability to easily calibrate and schedule A/F ratio perturbations for catalytic conversion efficiency optimization.

    摘要翻译: 利用基于模型的A / F比估计器改进的闭环反馈燃料控制,其中估计器,控制器和模型的部分在固定的时间间隔的基础上更新,从而最小化控制对基于事件的吞吐量的影响 。 发动机运输延迟和氧传感器动力学被建模以估计感测的A / F比,并且将估计与感测的A / F比进行比较以自适应地调整模型并开发指令燃料量的闭环调节。 发动机运输延迟模型是基于发动机事件进行的,但传感器动力学模型是在时间基础上进行的,以准确反映传感器的模拟特性。 估计器和控制器也在时间基础上进行,以在较高的发动机转速下降低吞吐量要求,并且控制增益被计划以考虑发动机事件与时间更新率之间的差异。 该控制实现了许多控制增强,包括拓扑变化的灵活性(如传感器放置,传感器类型和传感器特性),易于校准,以及易于校准和调度A / F比扰动的催化转化效率优化的能力。

    Transient fuel compensation
    9.
    发明授权
    Transient fuel compensation 失效
    瞬时燃油补偿

    公开(公告)号:US6003496A

    公开(公告)日:1999-12-21

    申请号:US160954

    申请日:1998-09-25

    IPC分类号: F02D41/04 F02M51/00

    CPC分类号: F02D41/047

    摘要: Transient internal combustion engine fueling control with reduced calibration burden and increased precision through application of a convection model to estimate the mass transfer of fuel between cylinder intake gasses and intake system components primarily as a function of fuel film temperature and gas flow across fuel film on such components. The convection model applies potential/flow conditions in proximity to fuel film on intake components of an engine cylinder to predict the depletion of the fuel film and generates an impact factor representing the fraction of injected fuel impacting intake system components in a manner providing fuel control stability. The convection model applies an intake valve temperature estimate generated simply as a function of air mass flow rate through the intake system to be used in the calculation of the film convection parameters.

    摘要翻译: 通过应用对流模型来估计燃料在气缸进气和进气系统组件之间的质量传递的瞬态内燃机加油控制,降低了校准负担,提高了精度,主要是作为燃料薄膜温度和燃料薄膜上的气体流量的函数 组件。 对流模型将燃料膜附近的潜在/流动条件应用于发动机气缸的进气部件上,以预测燃料膜的耗尽,并产生表示喷射燃料冲击进气系统部件的分数的冲击因子,以提供燃料控制稳定性 。 对流模型将进气阀温度估计值简单地作为通过进气系统的空气质量流量的函数产生,以用于计算薄膜对流参数。