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    • 32. 发明授权
    • Method and system for operating an engine having a turbocharger with at least two discrete positions and exhaust gas recirculation (EGR)
    • 用于操作具有至少两个离散位置的涡轮增压器和废气再循环(EGR)的发动机的方法和系统,
    • US06604361B2
    • 2003-08-12
    • US09993454
    • 2001-11-26
    • Julia Helen BucklandIlya V. Kolmanovsky
    • Julia Helen BucklandIlya V. Kolmanovsky
    • F02B3344
    • F02C6/12F01D17/14F02B37/24F02B47/08F02D21/08F02M26/05F02M26/10Y02T10/121Y02T10/144
    • A method and system for controlling an engine having a turbocharger with at least two discrete positions and exhaust gas recirculation (EGR). The method includes producing a control signal to the turbocharger. The signal has two discrete levels. One of such levels is selected to provide a proper flow of air through the turbocharger to an intake of the engine and such selected level is modulated between such two levels over time to provide, over time, a proper pressure at an input of the EGR to enable a proper flow of exhaust gases from the exhaust of the engine through the EGR back to the intake of the engine. With such method, while there is relatively instantaneous control of the exhaust pressure at the input of the EGR, and hence proper instantaneous control of EGR flow through the EGR. Because of the relatively large inertia, and hence slower response time of the turbocharger to the control signal the turbocharger maintains proper boost flow to the input of the engine via the turbocharger with its accompanying improved fuel efficiency.
    • 一种用于控制具有至少两个离散位置的涡轮增压器和排气再循环(EGR)的发动机的方法和系统。 该方法包括向涡轮增压器产生控制信号。 信号有两个离散的电平。 选择这样一个等级以提供通过涡轮增压器的适当空气流到发动机的进气口,并且这种选定的水平随时间在这两个水平之间被调制,以随着时间的推移在EGR输入端提供适当的压力, 使得能够将来自发动机的排气的废气的适当流动通过EGR返回到发动机的进气口。 利用这种方法,虽然对EGR输入端的排气压力进行相对瞬时的控制,并且因此对通过EGR的EGR流的适当瞬时控制。 由于相对较大的惯性,因此涡轮增压器对控制信号的响应时间较慢,涡轮增压器通过涡轮增压器保持对发动机的输入的适当的增压流,同时伴随燃料效率的提高。
    • 33. 发明授权
    • Adaptive torque model for internal combustion engine
    • 内燃机自适应扭矩模型
    • US06553958B1
    • 2003-04-29
    • US09833237
    • 2001-04-11
    • Ilya V KolmanovskyJulia Helen BucklandJing Sun
    • Ilya V KolmanovskyJulia Helen BucklandJing Sun
    • F02B1700
    • F02B17/005F02B23/104F02B2075/125F02D41/0097F02D41/1402F02D2041/1433F02D2200/1004F02D2250/18Y02T10/123
    • A system and method for controlling a multi-cylinder internal combustion engine include determining a first engine operating variable using a model having at least one adjustable model parameter, measuring a second engine operating variable, and modifying the at least one adjustable model parameter based on a relationship between the first and second engine operating variables. In one embodiment, the first engine operating variable represents engine torque while the second engine operating variable is engine speed. An engine torque model and/or load torque model may be used to determine an estimated engine speed or speed trajectory which is compared to the actual engine speed or trajectory determined using an engine speed sensor. One or more model parameters for the engine torque and/or load torque model are adjusted when appropriate operating conditions are met based on a difference between the predicted or estimated engine speeds and the measured engine speeds.
    • 用于控制多气缸内燃机的系统和方法包括使用具有至少一个可调模型参数的模型来确定第一发动机操作变量,测量第二发动机操作变量,以及基于 第一和第二发动机运行变量之间的关系。 在一个实施例中,第一发动机操作变量表示发动机扭矩,而第二发动机操作变量是发动机转速。 发动机转矩模型和/或负载转矩模型可用于确定与使用发动机转速传感器确定的实际发动机转速或轨迹进行比较的估计的发动机转速或速度轨迹。 基于预测或估计的发动机速度与所测量的发动机速度之间的差异来满足适当的操作条件时,调整发动机转矩和/或负载转矩模型的一个或多个模型参数。
    • 35. 发明授权
    • Torque control scheme for low emission lean burn vehicle
    • 低排放稀燃车辆扭矩控制方案
    • US06253546B1
    • 2001-07-03
    • US09519202
    • 2000-03-06
    • Jing SunIlya Vladimir KolmanovskyJulia Helen BucklandMathew Alan Boesch
    • Jing SunIlya Vladimir KolmanovskyJulia Helen BucklandMathew Alan Boesch
    • F01N900
    • F01N3/0842F02D37/02F02D41/0065F02D41/0275F02D41/307F02D2041/141F02D2200/0406F02D2250/21Y02T10/24
    • A method of minimizing torque disturbances in an internal combustion engine for a vehicle having a lean NOx trap that is periodically purged. The method includes the steps of generating feedforward values of first engine characteristics as a function of desired engine torque and generating feedback values of second engine characteristics as a function of intake manifold pressure. Target values are then calculated for predetermined engine variables based on the first and second engine characteristics. Engine variables are then set to the target values to compensate for torque disturbances resulting from the lean NOx trap purge cycle. According to the disclosed method, the feedforward path schedules the throttle, fuel rate and spark timing based on an engine model to produce a demanded engine torque. The feedback path then uses the values of fuel rate and spark timing to compensate for torque variations. This is accomplished by determining an error term as a function of a reference trajectory intake manifold pressure and measured intake manifold pressure.
    • 一种使具有周期性净化的贫NOx捕集器的车辆内燃机的转矩扰动最小化的方法。 该方法包括以下步骤:根据期望的发动机扭矩产生第一发动机特性的前馈值,并产生作为进气歧管压力的函数的第二发动机特性的反馈值。 然后基于第一和第二发动机特性为预定的发动机变量计算目标值。 然后将发动机变量设置为目标值,以补偿由稀NOx排气净化循环引起的扭矩扰动。 根据所公开的方法,前馈路径基于发动机模型调度节气门,燃料速率和火花正时,以产生所需的发动机扭矩。 然后,反馈路径使用燃料速率和火花正时的值来补偿扭矩变化。 这是通过确定作为参考轨迹进气歧管压力和测量的进气歧管压力的函数的误差项来实现的。
    • 40. 发明授权
    • Rapid transient torque management in DISI engines
    • DISI发动机快速瞬态扭矩管理
    • US06278933B1
    • 2001-08-21
    • US09560324
    • 2000-04-28
    • Julia Helen BucklandJessy W. Grizzle
    • Julia Helen BucklandJessy W. Grizzle
    • F02D4102
    • F02D13/0215F02D13/0253F02D41/0002F02D41/182F02D2041/001F02D2041/002F02D2041/389F02D2200/0404F02D2200/1004F02D2250/18F02D2250/21Y02T10/18Y02T10/42
    • A system and method for transient torque control of a direct injection spark ignition engine include controlling airflow and fuel flow rather than ignition timing so that spark timing may be set for best fuel economy. The system and method are particularly suited for variable cam timing or variable valve timing DISI engines where valve timing enables a sufficiently fast engine torque response to achieve transient control. The present invention may be used for torque-based speed control strategies, such as idle speed control or cruise control. The invention includes determining a maximum available airflow to determine whether a desired torque and air/fuel ratio can be achieved using airflow. Otherwise, the invention uses fuel flow control based on the maximum available air flow to provide the desired engine output torque and air/fuel ratio.
    • 用于直接喷射火花点火发动机的瞬态扭矩控制的系统和方法包括控制气流和燃料流量而不是点火正时,从而可以设定火花正时以获得最佳的燃料经济性。 该系统和方法特别适用于可变凸轮正时或可变气门正时DISI发动机,其中气门正时能够实现足够快的发动机扭矩响应以实现瞬态控制。 本发明可以用于基于扭矩的速度控制策略,例如怠速控制或巡航控制。 本发明包括确定最大可用气流以确定是否可以使用气流来实现期望的扭矩和空气/燃料比。 否则,本发明使用基于最大可用空气流量的燃料流量控制来提供期望的发动机输出扭矩和空气/燃料比。