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1.发明授权
公开(公告)号：US5150692A
公开(公告)日：1992-09-29
申请号：US807315
申请日：1991-12-16
CPC分类号： F02M67/02 , F02D33/00 , F02D41/32 , F02D7/02 , F02D2041/3088 , F02D2041/389 , F02D41/3023
摘要： A system is disclosed for controlling the pressure in a pressurized air supply for an internal combustion engine having pneumatic direct fuel injection, wherein pressurized air from the supply is utilized to inject fuel held within a fuel injector directly into an engine cylinder, against opposing cylinder compression pressure, while the injector is opened during a cylinder injection period in the engine cycle. The system adjusts the duration of the cylinder fuel injection period in accordance with the sensed pressure in the air supply to maintain the air supply pressure above cylinder compression pressure during the injection period, thereby preventing the backflow of fuel through the cylinder fuel injector into the air supply.
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公开(公告)号：US08516895B2
公开(公告)日：2013-08-27
申请号：US12575694
申请日：2009-10-08
IPC分类号： G01L7/16
CPC分类号： F02D41/222 , F02D35/023 , G01L27/007 , Y02T10/40
摘要： A pressure sensor diagnostic system of the present disclosure includes an excitation module, a frequency determination module, and a fault determination module. The excitation module excites an in-cylinder pressure sensor and causes the in-cylinder pressure sensor to oscillate. The frequency determination module determines an oscillation frequency of the in-cylinder pressure sensor. The fault determination module diagnoses the in-cylinder pressure sensor based on the oscillation frequency.
摘要翻译： 本公开的压力传感器诊断系统包括激励模块，频率确定模块和故障确定模块。 励磁模块激发缸内压力传感器，并使缸内压力传感器振荡。 频率确定模块确定缸内压力传感器的振荡频率。 故障判定模块基于振荡频率来诊断缸内压力传感器。
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公开(公告)号：US20130079998A1
公开(公告)日：2013-03-28
申请号：US13245952
申请日：2011-09-27
IPC分类号： B60R11/00
CPC分类号： B60R1/074 , B60J1/17 , B60S1/0818 , B60S3/00 , H01Q1/103
摘要： A method of controlling a vehicle is provided. The method includes determining a current car wash mode from a plurality of car wash modes; and controlling at least one vehicle component based on the car wash mode.
摘要翻译： 提供一种控制车辆的方法。 该方法包括从多个洗车模式确定当前洗车模式; 以及基于所述洗车模式来控制至少一个车辆部件。
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公开(公告)号：US20130054109A1
公开(公告)日：2013-02-28
申请号：US13222503
申请日：2011-08-31
IPC分类号： F02D28/00
CPC分类号： F02D41/1497 , F02D41/009 , F02D2041/1417
摘要： A system for a vehicle includes a time stamping module, a period determination module, a stochastic pre-ignition (SPI) indication module, and an SPI remediation module. The time stamping module generates first and second timestamps when a crankshaft of an engine is in first and second crankshaft positions during an engine cycle, respectively. The period determination module determines a period between the first and second timestamps. The SPI indication module selectively indicates that an SPI event occurred within a cylinder of the engine based on the period. The SPI remediation module selectively adjusts at least one engine operating parameter in response to the SPI indication module indicating that the SPI event occurred within the cylinder.
摘要翻译： 一种车辆系统包括时间戳模块，周期确定模块，随机预点火（SPI）指示模块和SPI修复模块。 发动机的曲轴分别在发动机循环期间处于第一和第二曲轴位置时，时间戳模块产生第一和第二时间戳。 周期确定模块确定第一和第二时间戳之间的周期。 SPI指示模块基于该周期选择性地指示发生在发动机的气缸内的SPI事件。 SPI修复模块响应于SPI指示模块选择性地调整至少一个引擎操作参数，指示SPI事件发生在气缸内。
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公开(公告)号：US20120209494A1
公开(公告)日：2012-08-16
申请号：US13024726
申请日：2011-02-10
IPC分类号： F01L25/00
CPC分类号： F02D41/0097 , F01L1/2405 , F01L13/0031 , F01L2800/11 , F02D35/024 , F02D41/1497 , F02D41/221 , F02D2041/001 , F02D2041/1432 , F02D2041/227 , F02D2041/228 , F02D2200/1012 , Y02T10/40
摘要： A system for a vehicle includes a filtering module, an indicated mean effective pressure (IMEP) determination module, and a stuck mechanism indicator module. The filtering module generates engine speeds based on positions of teeth of a toothed wheel that rotates with a crankshaft and based on a crankshaft position signal generated by a crankshaft position sensor. The IMEP determination module determines an IMEP for a combustion cycle of a cylinder of an engine based on squares of first and second ones of the engine speeds during the combustion cycle. The stuck mechanism indicator module selectively diagnoses a fault in a variable valve lift (VVL) mechanism of the cylinder based on the IMEP.
摘要翻译： 车辆系统包括过滤模块，指示平均有效压力（IMEP）确定模块和卡住机构指示器模块。 过滤模块基于与曲轴一起旋转的齿轮的齿的位置并且基于由曲轴位置传感器产生的曲轴位置信号来生成发动机转速。 IMEP确定模块基于燃烧循环期间的第一和第二发动机速度的平方，确定发动机气缸的燃烧循环的IMEP。 卡住机构指示器模块基于IMEP选择性地诊断气缸的可变气门升程（VVL）机构的故障。
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公开(公告)号：US07568467B2
公开(公告)日：2009-08-04
申请号：US11759263
申请日：2007-06-07
CPC分类号： G01M15/06 , F02D35/023 , F02D41/009 , G01M15/08
摘要： A method of correcting a crankshaft position may include determining first, second, and third crankshaft positions, determining first, second, and third cylinder pressures, determining first, second, and third cylinder volumes, determining the logarithm of the first, second, and third cylinder pressures and cylinder volumes, and determining a relationship between the third cylinder volume and the first and second cylinder volumes. The first, second, and third crankshaft positions may be provided during one of a piston expansion stroke and a piston compression stroke within a cylinder. The logarithm of the third cylinder pressure and cylinder volume may be evaluated with respect to a predetermined limit of a line defined by the logarithm of the first and second cylinder pressures and first and second cylinder volumes.
摘要翻译： 校正曲轴位置的方法可以包括确定第一，第二和第三曲轴位置，确定第一，第二和第三气缸压力，确定第一，第二和第三气缸体积，确定第一，第二和第三气缸体积的对数 气缸压力和气缸体积，以及确定第三气缸容积与第一和第二气缸体积之间的关系。 第一，第二和第三曲轴位置可以在气缸内的活塞膨胀冲程和活塞压缩冲程之一内提供。 可以相对于由第一和第二气缸压力和第一和第二气缸体积的对数限定的线的预定极限来评估第三气缸压力和气缸容积的对数。
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公开(公告)号：US5163398A
公开(公告)日：1992-11-17
申请号：US807352
申请日：1991-12-16
摘要： An idle speed regulating system is described for an internal combustion engine operating according to a fuel based control strategy, wherein the amount of fuel delivered the engine is determined directly as a function of the demand for engine output power and the amount of air supplied to the engine is controlled as a function of the quantity of delivered fuel. The system senses the actual idling rotational speed of the engine, derives a desired idling speed for the engine, and reduces the difference between the desired and actual idling speeds by adjusting the flow rate of the quantity of fuel delivered to the engine as a function of the difference between the desired and actual idling speeds. More specifically, the rate of fuel flow is adjusted in accordance with the sum of an open-loop feedforward value, a closed-loop feedback value, and preferably an adaptive learning correction value.
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8.发明授权Control of engine fuel injection during transitional periods associated with deceleration fuel cut-off 失效在与减速燃料切断相关的过渡期间控制发动机燃油喷射
公开(公告)号：US5119781A
公开(公告)日：1992-06-09
申请号：US661975
申请日：1991-02-28
申请人： Douglas E. Trombley , Kenneth J. Buslepp , Paul E. Reinke , Steven D. Stiles , Kenneth G. Macklem
发明人： Douglas E. Trombley , Kenneth J. Buslepp , Paul E. Reinke , Steven D. Stiles , Kenneth G. Macklem
CPC分类号： F02D41/126 , F02D41/0087 , F02D2041/389 , F02D2250/21
摘要： A method is described for controlling the injection of fuel in a direct injected, multi-cylinder internal combustion engine, to smooth transients in engine output torque associated with a deceleration fuel cut-off mode of engine operation. This is accomplished by detecting engine operating conditions that call for the initiation of a transition associated with the decelaration fuel cut-off engine operating mode. In response to the detected operating conditions, a transitional period is initiated, during which the injection of fuel into a varying portion of engine cylinders is then interrupted. When the transitional period is associated with entry into the deceleration fuel cut-off mode, the injection of fuel to a progressively increasing number of cylinders is interrupted. When the transitional period is associated with recovery from the deceleration fuel cut-off mode, the injection of fuel to a progressively decreasing number of engine cylinders is interrupted. The rate of entry into the fuel cut-off mode is preferably fixed, while the rate of receovery is determined in accordance with the position of an engine control element for adjusting the amount of torque developed at the engine output. Alternatively, the rate of recovery may be determined by the maximum rate of positional change of the engine control element.
摘要翻译： 描述了一种用于控制直接喷射的多气缸内燃机中的燃料喷射的方法，以平滑与发动机运转的减速燃料切断模式相关的发动机输出转矩的瞬变。 这是通过检测要求启动与减速燃料切断发动机运行模式相关联的过渡的发动机操作条件来实现的。 响应于检测到的操作条件，开始过渡时段，在此过程中燃料喷射到发动机气缸的变化部分中然后被中断。 当过渡时段与进入减速燃料切断模式相关联时，燃料逐渐增加的气缸喷射被中断。 当过渡期与减速燃料切断模式的恢复相关联时，燃料喷射到逐渐减少的发动机气缸的数量被中断。 优选地，进入燃料切断模式的速度是固定的，而根据用于调节在发动机输出时产生的转矩的量的发动机控制元件的位置来确定再生速率。 或者，恢复速率可以通过发动机控制元件的最大位置变化率来确定。
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9.发明授权Method for controlling a crankcase scavenged two-stroke engine during deceleration fuel cut-off 失效用于在减速燃料切断期间控制曲轴箱清扫的二冲程发动机的方法
公开(公告)号：US5094206A
公开(公告)日：1992-03-10
申请号：US659777
申请日：1991-02-25
CPC分类号： F02D41/123 , F02D41/0005 , F02D9/02 , F02B2075/025 , F02D2009/0237 , F02D2009/0242 , F02D2400/04 , Y02T10/42
摘要： A method is described for increasing engine braking, when a crankcase scavenged two-stroke engine is operated in a deceleration fuel cut-off mode. In response to the detection of operating conditions indicating engine operation in the deceleration fuel cut-off mode, the quantity of air inducted into the engine is decreased, for a predetermined period of time. After this period of time elapses, the quantity of air inducted into the engine is then increased. This is preferably accomplished by regulating the degree of opening of a throttle valve disposed within the engine air intake system. The initial closing of the throttle valve restricts air flow through the engine for a predetermined time, to maintain efficient catalyst operating temperatures in the engine exhaust system. During extended operation in the deceleration fuel cut-off mode, the throttle valve is opened, after the lapse of the predetermined time, to increase the quantity of air inducted by the engine. This results in increased engine braking, due to the additional work that must be performed in compressing the larger quantity of inducted air.
摘要翻译： 描述了一种用于增加发动机制动的方法，当曲轴箱清扫的二冲程发动机以减速燃料切断模式操作时。 响应于在减速燃料切断模式中检测到指示发动机运转的运行条件，导入发动机的空气量减少预定时间段。 经过这段时间后，引入发动机的空气量就会增加。 这优选通过调节设置在发动机进气系统内的节流阀的开度来实现。 节气门的初始关闭限制了通过发动机的空气流动预定时间，以保持发动机排气系统中有效的催化剂操作温度。 在减速燃料切断模式的延长运转中，节气门在经过规定时间之后打开，以增加发动机所引入的空气量。 这导致增加发动机制动，这是由于在压缩较大量的引入空气时必须执行的额外工作。
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10.发明授权Method and means for determining air mass in a crankcase scavenged two-stroke engine 失效用于确定曲轴箱清扫二冲程发动机中的空气质量的方法和装置
公开(公告)号：US4920789A
公开(公告)日：1990-05-01
申请号：US409377
申请日：1989-09-19
CPC分类号： G01F1/86 , F02D41/18 , F02B2075/025 , F02D2400/04
摘要： A method and means are described for determining the mass of air available for combustion within a cylinder of a crankcase scavenged two-cycle engine, without the use of a mass-air flow sensor. This is achieved by estimating the mass of air under compression within a crankcase chamber, prior to its transfer to a cylinder combustion chamber during the engine operating cycle. The estimate for air mass is based upon the polytropic behavior of a portion of the crankcase compression process, and the pressure, volume and temperature of the air at two predetermined engine rotational positions during the polytropic phase of compression. The volume of the air within the crankcase chamber is determined as a function of engine rotational angle, with crankcase air temperature being derived as a function of intake air temperature. Air pressure during the polytropic phase of compression is sensed with a pressure sensor disposed within the crankcase chamber. The estimate for air mass is corrected to account for air leakage and imperfect transference of the air between the crankcase and combustion chambers.
摘要翻译： 描述了一种用于确定可用于在曲轴箱清扫的两冲程发动机的气缸内燃烧的空气的质量的方法和装置，而不使用质量 - 空气流量传感器。 这是通过在发动机运转循环期间将其转移到气缸燃烧室之前估计在曲轴箱室内的压缩空气质量来实现的。 空气质量的估计基于曲轴箱压缩过程的一部分的多变性行为，以及在压缩多相期间的两个预定的发动机转动位置处的空气的压力，体积和温度。 曲轴箱室内空气的体积被确定为发动机旋转角度的函数，曲轴箱空气温度作为进气温度的函数导出。 用设置在曲轴箱内的压力传感器检测压缩多相期间的空气压力。 对空气质量的估计被校正以考虑空气泄漏和曲轴箱和燃烧室之间的空气的不完全转移。
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