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公开(公告)号：US11603818B1
公开(公告)日：2023-03-14
申请号：US17450256
申请日：2021-10-07
发明人： Rani Kiwan , Chris Glugla
摘要： Systems and methods for preparing an engine for a cold start are described. In one example, the air is injected into one or more pre-chambers of engine cylinders in response to an engine start request so that one or more cylinders may be heated before the engine is started. The engine may or may not be rotated while air is being injected to pre-chambers of engine cylinders.
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公开(公告)号：US11519354B1
公开(公告)日：2022-12-06
申请号：US17444627
申请日：2021-08-06
发明人： Thomas Leone , Chris Glugla , Kenneth Miller
摘要： Systems and methods for stopping an engine of a vehicle are described. In one example, the method anticipates when an engine is expected to stop and modifies engine operation so that less fuel is in the engine's intake ports when the engine is stopped so that the fuel may not escape the engine when the engine is restarted.
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公开(公告)号：US20220364522A1
公开(公告)日：2022-11-17
申请号：US17302789
申请日：2021-05-12
发明人： Gopichandra Surnilla , Chris Glugla , Chad Archer
摘要： Systems and methods for starting an engine of a hybrid vehicle are described. In one example, the method uses the engine to generate larger amounts of thermal energy while the engine is rotated under power of an electric machine. The systems and methods described herein may be applied to series and parallel hybrid vehicles.
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公开(公告)号：US11306668B1
公开(公告)日：2022-04-19
申请号：US17143079
申请日：2021-01-06
摘要： Methods and systems are provided for controlling and monitoring intake and exhaust poppet valves of an internal combustion engine. In one example, the methods and system include feedback control that estimates intake and exhaust valve timing based on output of an in cylinder pressure sensor. In another example, the methods and system include compensation for feedforward control of intake and exhaust valves based on output of the in cylinder pressure sensor.
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公开(公告)号：US20230127422A1
公开(公告)日：2023-04-27
申请号：US17452526
申请日：2021-10-27
发明人： Chris Glugla
摘要： Methods and systems are provided for maintaining efficiency of a catalyst that is positioned in an exhaust system downstream of an internal combustion engine. In one example, the catalyst may be heated via supplying fuel to a cylinder that does not combust the fuel. The fuel may be oxidized at the catalyst via excess oxygen in the exhaust system.
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公开(公告)号：US11371454B2
公开(公告)日：2022-06-28
申请号：US17443801
申请日：2021-07-27
发明人： Chris Glugla , Brad A. VanDerWege
摘要： Systems and methods for stopping and starting a direct injection engine are described. In one example, the air is injected into one or more pre-chambers of engine cylinders to adjust engine pumping torque during an engine stop so that the engine may stop at a crankshaft position that facilitates direct engine starting.
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公开(公告)号：US20220106921A1
公开(公告)日：2022-04-07
申请号：US17065380
申请日：2020-10-07
发明人： Chris Glugla , Joe Ulrey
摘要： A method for operating an engine during a fuel cut-off mode is disclosed. The method may adjust exhaust valve opening timing and exhaust valve lift of one or more cylinders to heat air flowing through the one or more cylinders so that a temperature of an after treatment device may be maintained or increased.
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公开(公告)号：US20190226415A1
公开(公告)日：2019-07-25
申请号：US15876987
申请日：2018-01-22
摘要： Methods and systems are provided for characterizing aged fuel, which loses volatility over time. In one example, a method may include estimating a fuel vapor pressure during an engine cold start using a pre-determined fuel distillation curve and adjusting one or more combustion parameters based on the estimated fuel vapor pressure. Because the fuel vapor pressure directly relates to the fuel volatility, adjusting the one or more combustion parameters based on the estimated fuel vapor pressure may reduce aged fuel-related engine performance degradation, such as hesitation and emissions during cold start.
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公开(公告)号：US11492990B2
公开(公告)日：2022-11-08
申请号：US17065380
申请日：2020-10-07
发明人： Chris Glugla , Joseph N. Ulrey
摘要： A method for operating an engine during a fuel cut-off mode is disclosed. The method may adjust exhaust valve opening timing and exhaust valve lift of one or more cylinders to heat air flowing through the one or more cylinders so that a temperature of an after treatment device may be maintained or increased.
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公开(公告)号：US11421614B1
公开(公告)日：2022-08-23
申请号：US17443931
申请日：2021-07-28
发明人： Chris Glugla
摘要： Methods and systems are provided for increasing a catalyst temperature prior to entering a vehicle mode where combustion is temporarily discontinued. In one example, a method for increasing a temperature of an emission control device before a transient fuel shut-off (TFSO) event of an engine via a spark timing adjustment and an exhaust valve opening timing adjustments. Adjustments of the spark timing and the exhaust valve opening timing may change depending on whether a transient fuel shut off event of an auto-stop event occurs.
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