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公开(公告)号：US11506162B2
公开(公告)日：2022-11-22
申请号：US16950026
申请日：2020-11-17
Applicant: Caterpillar Inc.
Inventor： Cory Andrew Brown , Sana Mahmood , Dana Ray Coldren , Glenn Brian Cox , Matthew Robert Vanderveen
Abstract: A fuel system includes a fuel injector having a split check assembly with a control piece, an outlet piece, and a check sleeve. A trapped volume is formed between the control piece and the outlet piece within the check sleeve, to hydraulically couple the control piece to the outlet piece. A starting rate shape clearance fluidly connects the trapped volume to a fuel cavity and is formed between the check sleeve and one of the control piece or outlet piece received therein, and modulates a starting rate shape of fuel injection from the fuel injector. Related methodology is disclosed.
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公开(公告)号：US20220154673A1
公开(公告)日：2022-05-19
申请号：US16950026
申请日：2020-11-17
Applicant: Caterpillar Inc.
Inventor： Cory Andrew Brown , Sana Mahmood , Dana Ray Coldren , Glenn Brian Cox , Matthew Robert Vanderveen
Abstract: A fuel system includes a fuel injector having a split check assembly with a control piece, an outlet piece, and a check sleeve. A trapped volume is formed between the control piece and the outlet piece within the check sleeve, to hydraulically couple the control piece to the outlet piece. A starting rate shape clearance fluidly connects the trapped volume to a fuel cavity and is formed between the check sleeve and one of the control piece or outlet piece received therein, and modulates a starting rate shape of fuel injection from the fuel injector. Related methodology is disclosed.
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公开(公告)号：US20220082073A1
公开(公告)日：2022-03-17
申请号：US17021461
申请日：2020-09-15
Applicant: Caterpillar Inc.
Inventor： Cory Andrew Brown , Matthew Robert Vanderveen , Andrew Justin Wallis , Michael Curtis Herr , Dana Ray Coldren
Abstract: A fuel injector includes an injector housing, an outlet check, an injection control valve assembly, and a valve seat orifice plate integrating a valve seat and various orifices for outlet check control. In the valve seat orifice plate a drain orifice extends between a valve seat surface and a check control chamber formed between a closing hydraulic surface of the outlet check and the valve seat orifice plate. First and second re-pressurization orifices extend between an outer surface of the valve seat orifice plate and the check control chamber.
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公开(公告)号：US11591995B2
公开(公告)日：2023-02-28
申请号：US17021461
申请日：2020-09-15
Applicant: Caterpillar Inc.
Inventor： Cory Andrew Brown , Matthew Robert Vanderveen , Andrew Justin Wallis , Michael Curtis Herr , Dana Ray Coldren
Abstract: A fuel injector includes an injector housing, an outlet check, an injection control valve assembly, and a valve seat orifice plate integrating a valve seat and various orifices for outlet check control. In the valve seat orifice plate a drain orifice extends between a valve seat surface and a check control chamber formed between a closing hydraulic surface of the outlet check and the valve seat orifice plate. First and second re-pressurization orifices extend between an outer surface of the valve seat orifice plate and the check control chamber.
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