-
1.发明申请SYSTEM AND METHOD FOR CONTROLLING A VACUUM PUMP THAT IS USED TO CHECK FOR LEAKS IN AN EVAPORATIVE EMISSIONS SYSTEM 有权用于控制真空泵的系统和方法，用于检查蒸发排放系统中的泄漏公开(公告)号：US20140102565A1
公开(公告)日：2014-04-17
申请号：US13651533
申请日：2012-10-15
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Robert Jackson , William R. Cadman , Paul William Rasmussen
CPC classification number: F02M25/0809 , F02M65/003 , F04C18/3441 , F04C25/02 , F04C28/06 , G01M99/008 , Y10T137/85986
Abstract: A control system according to the principles of the present disclosure includes a fuel system diagnostic module and a pump control module. The fuel system diagnostic module performs a diagnostic test on a fuel system when a vacuum pump is switched off to prevent flow through the vacuum pump and thereby seal a portion of the fuel system from an atmosphere. The vacuum pump includes a cam ring, a rotor that rotates within the cam ring, and vanes that slide into and out of slots in the rotor as the rotor rotates. The pump control module switches on the vacuum pump for a predetermined period to force the vanes out of the slots and into contact with the cam ring to seal the vacuum pump before switching off the vacuum pump for the fuel system diagnostic test.
Abstract translation: 根据本公开的原理的控制系统包括燃料系统诊断模块和泵控制模块。 当真空泵关闭时，燃料系统诊断模块对燃料系统进行诊断测试，以防止流过真空泵，从而将燃料系统的一部分与大气密封。 真空泵包括凸轮环，在凸轮环内旋转的转子和当转子旋转时滑入和转出转子中的槽的叶片。 泵控制模块在预定时间内接通真空泵，以迫使叶片离开槽并与凸轮环接触，以在切断用于燃料系统诊断测试的真空泵之前密封真空泵。
-
2.发明授权Exhaust gas oxygen sensor fault detection systems and methods using fuel vapor purge rate 有权废气氧传感器故障检测系统和使用燃料蒸汽吹扫速率的方法公开(公告)号：US09057338B2
公开(公告)日：2015-06-16
申请号：US13673325
申请日：2012-11-09
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Stephen Paul Levijoki , Paul William Rasmussen
CPC classification number: F02D41/1441 , F02D41/0042 , F02D41/0295 , F02D41/1458 , F02D41/1495
Abstract: A diagnostic system for a vehicle includes an error module, an equivalence ratio (EQR) module, a threshold determination module, and a fault indication module. The error module determines an error value based on a difference between an amount of oxygen in exhaust measured by an exhaust gas oxygen sensor (EGO) upstream of a catalyst and an expected value of the amount. The EQR module selectively controls fuel injection based on the error value. The threshold determination module determines an error threshold based on a flow rate of fuel vapor from a vapor canister to an intake manifold of an engine. The fault indication module selectively indicates that a fault is present in the EGO sensor based on the error value and the error threshold.
Abstract translation: 一种用于车辆的诊断系统包括错误模块，等效比（EQR）模块，阈值确定模块和故障指示模块。 误差模块基于由催化剂上游的废气氧传感器（EGO）测量的排气中的氧气量与预期值之间的差异来确定误差值。 EQR模块根据误差值选择性地控制燃油喷射。 阈值确定模块基于从蒸汽罐到发动机的进气歧管的燃料蒸汽的流量来确定误差阈值。 故障指示模块根据误差值和误差阈值选择性地指示EGO传感器中存在故障。
-
3.发明授权System and method for controlling a vacuum pump that is used to check for leaks in an evaporative emissions system 有权用于控制用于检查蒸发排放系统中的泄漏的真空泵的系统和方法公开(公告)号：US09038489B2
公开(公告)日：2015-05-26
申请号：US13651533
申请日：2012-10-15
Applicant: GM Global Technology Operations LLC
Inventor： Robert Jackson , William R. Cadman , Paul William Rasmussen
IPC: G01M15/00 , G01M15/09 , G01L23/24 , F02M25/08 , F02M65/00 , G01M99/00 , F04C25/02 , F04C28/06 , F04C18/344
CPC classification number: F02M25/0809 , F02M65/003 , F04C18/3441 , F04C25/02 , F04C28/06 , G01M99/008 , Y10T137/85986
Abstract: A control system according to the principles of the present disclosure includes a fuel system diagnostic module and a pump control module. The fuel system diagnostic module performs a diagnostic test on a fuel system when a vacuum pump is switched off to prevent flow through the vacuum pump and thereby seal a portion of the fuel system from an atmosphere. The vacuum pump includes a cam ring, a rotor that rotates within the cam ring, and vanes that slide into and out of slots in the rotor as the rotor rotates. The pump control module switches on the vacuum pump for a predetermined period to force the vanes out of the slots and into contact with the cam ring to seal the vacuum pump before switching off the vacuum pump for the fuel system diagnostic test.
Abstract translation: 根据本公开的原理的控制系统包括燃料系统诊断模块和泵控制模块。 当真空泵关闭时，燃料系统诊断模块对燃料系统进行诊断测试，以防止流过真空泵，从而将燃料系统的一部分与大气密封。 真空泵包括凸轮环，在凸轮环内旋转的转子和当转子旋转时滑入和转出转子中的槽的叶片。 泵控制模块在预定时间内接通真空泵，以迫使叶片离开槽并与凸轮环接触，以在切断用于燃料系统诊断测试的真空泵之前密封真空泵。
-
4.发明申请EXHAUST GAS OXYGEN SENSOR FAULT DETECTION SYSTEMS AND METHODS USING FUEL VAPOR PURGE RATE 有权废气氧传感器故障检测系统和使用燃料蒸气渗透率的方法公开(公告)号：US20140130785A1
公开(公告)日：2014-05-15
申请号：US13673325
申请日：2012-11-09
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Stephen Paul Levijoki , Paul William Rasmussen
IPC: F02D45/00
CPC classification number: F02D41/1441 , F02D41/0042 , F02D41/0295 , F02D41/1458 , F02D41/1495
Abstract: A diagnostic system for a vehicle includes an error module, an equivalence ratio (EQR) module, a threshold determination module, and a fault indication module. The error module determines an error value based on a difference between an amount of oxygen in exhaust measured by an exhaust gas oxygen sensor (EGO) upstream of a catalyst and an expected value of the amount. The EQR module selectively controls fuel injection based on the error value. The threshold determination module determines an error threshold based on a flow rate of fuel vapor from a vapor canister to an intake manifold of an engine. The fault indication module selectively indicates that a fault is present in the EGO sensor based on the error value and the error threshold.
Abstract translation: 一种用于车辆的诊断系统包括错误模块，等效比（EQR）模块，阈值确定模块和故障指示模块。 误差模块基于由催化剂上游的废气氧传感器（EGO）测量的排气中的氧气量与预期值之间的差异来确定误差值。 EQR模块根据误差值选择性地控制燃油喷射。 阈值确定模块基于从蒸汽罐到发动机的进气歧管的燃料蒸汽的流量来确定误差阈值。 故障指示模块根据误差值和误差阈值选择性地指示EGO传感器中存在故障。
-
-
-
Search Results
4
records
(took 0.014 seconds)
