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Invention Grant
CN106414993B 可变冲程直接喷射燃油泵系统和用于操作系统的计算机实施方法 有权

可变冲程直接喷射燃油泵系统和用于操作系统的计算机实施方法
Abstract:
一种用于发动机的可变冲程直接喷射(DI)燃油泵系统，包括：DI燃油泵(136)，DI燃油泵(136)具有冲程构件(278)并且配置成基于冲程构件(278)的冲程泵送一定量的燃油。所述系统包括可变燃油泵致动器组件(212)，可变燃油泵致动器组件(212)包括配置成致动冲程构件(278)的致动器构件(270)、配置成控制到致动器构件(270)的液压流体的流量的控制阀(224)，以及配置成泵送所述液压流体并由凸轮轴(120)的一个或多个凸角(216)致动的液压流体泵(262)。该系统还包括发动机控制单元(ECU)，发动机控制单元(ECU)配置为通过基于发动机的一个或多个操作参数控制控制阀(224)来控制冲程构件(278)的可变冲程。
Abstract(English):

A variable stroke direct injection (DI) fuel pump system for an engine includes a DI fuel pump having a stroke member and configured to pump a quantity of fuel based on a stroke of the stroke member. The system includes a variable fuel pump actuator assembly comprising an actuator member configured to actuate the stroke member, a control valve configured to control a flow of hydraulic fluid to the actuator member, and a hydraulic fluid pump configured to pump the hydraulic fluid and be actuated by one or more lobes of a camshaft. The system also includes an engine control unit (ECU) configured to control a variable stroke of the stroke member by controlling the control valve based on one or more operating parameters of the engine.

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