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公开(公告)号：US20210340928A1
公开(公告)日：2021-11-04
申请号：US17286183
申请日：2019-10-15
Applicant: Perkins Engines Company Limited
Inventor： Adam Stubbs , Kane Lok , Chris Burgess
Abstract: This disclosure relates to a method of controlling an engine and more particularly for controlling the transition between operating modes of an internal combustion engine such as between an economy mode and a performance mode. The method comprising the steps of determining a current fuel-air ratio at which the engine is operating and comparing it with a predetermined fuel-air ratio limit. The time duration for which the current fuel air-ratio is below the fuel-air ratio limit is determined and compared with a predetermined waiting time threshold value. A count is triggered, which is based on a difference between the current fuel-air ratio and the fuel-air ratio limit when the engine is operating at a current fuel-air ratio which is below the fuel-air ratio limit and this is compared with an intensity threshold value. The operating mode is shifted from the performance mode to the economy mode when both the time duration and the count exceed the waiting time threshold value and the intensity threshold value respectively. The operating mode is automatically shifted back to the performance mode when the current fuel-air ratio reaches or exceeds the fuel ratio limit. The method alternatively comprises using the air-fuel ratio, instead of the fuel-air ratio, and the switch from performance mode to economy mode only occurs when the current air-fuel is above a predetermined air-fuel limit and it remains above the predetermined air-fuel limit until two other predetermined thresholds have been reached.
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公开(公告)号：US09528456B2
公开(公告)日：2016-12-27
申请号：US14362699
申请日：2012-12-11
Applicant: PERKINS ENGINES COMPANY LIMITED
Inventor： Adam Stubbs
CPC classification number: F02D41/0077 , F02D41/221 , F02M26/48 , F16K31/04 , Y02T10/47
Abstract: A method of controlling a valve assembly includes calculating, by a controller of the valve assembly, one or more electrical signals to move a valve element of the valve assembly dependent on an actual and a desired position of the valve element. The method also includes sending, by the controller, the one or more electrical signals to an electrical actuator of the valve assembly. The method further includes detecting a valve fault condition defined as the actual position of the valve element failing to match the desired position of the valve element after a configurable period has elapsed. When the valve fault condition is detected, the method includes substituting the data corresponding to the desired position of the valve element with pulses of waveform data which oscillate about a value corresponding to the desired position of the valve element until either of two predetermined conditions is met.
Abstract translation: 一种控制阀组件的方法包括：由阀组件的控制器计算一个或多个电信号，以根据阀元件的实际位置和期望位置来移动阀组件的阀元件。 该方法还包括由控制器将一个或多个电信号发送到阀组件的电致动器。 该方法还包括检测阀故障状态，其被定义为在经过可配置的时间段之后，阀元件的实际位置未能匹配阀元件的期望位置。 当检测到阀故障状况时，该方法包括用与波形数据相对应的波形数据的脉冲替换对应于阀元件的期望位置的数据，该值是与阀元件的期望位置相对应的值，直到达到两个预定条件之一 。
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公开(公告)号：US20140332705A1
公开(公告)日：2014-11-13
申请号：US14362699
申请日：2012-12-11
Applicant: PERKINS ENGINES COMPANY LIMITED
Inventor： Adam Stubbs
CPC classification number: F02D41/0077 , F02D41/221 , F02M26/48 , F16K31/04 , Y02T10/47
Abstract: A method of controlling a valve assembly includes calculating, by a controller of the valve assembly, one or more electrical signals to move a valve element of the valve assembly dependent on an actual and a desired position of the valve element. The method also includes sending, by the controller, the one or more electrical signals to an electrical actuator of the valve assembly. The method further includes detecting a valve fault condition defined as the actual position of the valve element failing to match the desired position of the valve element after a configurable period has elapsed. When the valve fault condition is detected, the method includes substituting the data corresponding to the desired position of the valve element with pulses of waveform data which oscillate about a value corresponding to the desired position of the valve element until either of two predetermined conditions is met.
Abstract translation: 一种控制阀组件的方法包括：由阀组件的控制器计算一个或多个电信号，以根据阀元件的实际位置和期望位置来移动阀组件的阀元件。 该方法还包括由控制器将一个或多个电信号发送到阀组件的电致动器。 该方法还包括检测阀故障状态，其被定义为在经过可配置的时间段之后，阀元件的实际位置未能匹配阀元件的期望位置。 当检测到阀故障状况时，该方法包括用与波形数据相对应的波形数据的脉冲替换对应于阀元件的期望位置的数据，该值是与阀元件的期望位置相对应的值，直到达到两个预定条件之一 。
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公开(公告)号：US11614045B2
公开(公告)日：2023-03-28
申请号：US17286183
申请日：2019-10-15
Applicant: Perkins Engines Company Limited
Inventor： Adam Stubbs , Kane Lok , Chris Burgess
Abstract: This disclosure relates to a method of controlling an engine and more particularly for controlling the transition between operating modes of an internal combustion engine such as between an economy mode and a performance mode. The method comprising the steps of determining a current fuel-air ratio at which the engine is operating and comparing it with a predetermined fuel-air ratio limit. The time duration for which the current fuel air-ratio is below the fuel-air ratio limit is determined and compared with a predetermined waiting time threshold value. A count is triggered, which is based on a difference between the current fuel-air ratio and the fuel-air ratio limit when the engine is operating at a current fuel-air ratio which is below the fuel-air ratio limit and this is compared with an intensity threshold value. The operating mode is shifted from the performance mode to the economy mode when both the time duration and the count exceed the waiting time threshold value and the intensity threshold value respectively. The operating mode is automatically shifted back to the performance mode when the current fuel-air ratio reaches or exceeds the fuel ratio limit. The method alternatively comprises using the air-fuel ratio, instead of the fuel-air ratio, and the switch from performance mode to economy mode only occurs when the current air-fuel is above a predetermined air-fuel limit and it remains above the predetermined air-fuel limit until two other predetermined thresholds have been reached.
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