Fuel injector assembly having a case designed for solenoid cooling
AssigneeCaterpillar Inc.
InventorsEric L. Schroeder, Craig P. Hittle
Life of this patent
Estimating the term…
Abstract
A fuel injector assembly is disclosed. The fuel injector assembly may include a case that encloses a solenoid assembly. The fuel injector assembly may include one or more inlet passages, positioned on the case, to permit fluid to enter the case to cool the solenoid assembly. The fuel injector assembly may include one or more outlet passages, positioned on the case, to permit fluid to exit the case. The fuel injector assembly may include an annular protrusion positioned around a circumference of the case between the one or more inlet passages and the one or more outlet passages.
Claims20
A fuel injector assembly, comprising:
- a case that encloses a solenoid assembly,
- the case including:
- a first portion that includes multiple inlet passages that permit fluid to enter the case to cool the solenoid assembly;
- a second portion that includes multiple outlet passages that permit fluid to exit the case;
- and
- an annular protrusion positioned around a circumference of the case between the first portion and the second portion.
A fuel injection system for a cylinder head having one or more injector bores, a fuel supply passage, and a fuel drain passage, the fuel injection system comprising:
- one or more fuel injectors to be seated in the one or more injector bores, wherein a fuel injector, of the one or more fuel injectors, comprises:
- a case that encloses one or more components,
- the case including:
- a first portion that includes multiple inlet passages to permit fluid to enter the case to cool the one or more components;
- a second portion that includes multiple outlet passages to permit fluid to exit the case;
- and
- an annular protrusion positioned around a circumference of the case between the first portion and the second portion.
An engine, comprising:
- a cylinder head having one or more injector bores, a fuel supply passage, and a fuel drain passage;
- a fuel injection system comprising one or more fuel injectors to be seated in the one or more injector bores, wherein a fuel injector, of the one or more fuel injectors, comprises:
- a case that encloses a solenoid,
- the case including:
- a first portion that includes multiple inlet passages to permit fluid to enter the case to cool the solenoid;
- a second portion that includes multiple outlet passages to permit fluid to exit the case;
- and
- an annular protrusion positioned around a circumference of the case between the first portion and the second portion such that an outer edge of the annular protrusion is positioned to be in closer proximity to an injector bore, in which the fuel injector is to be seated, than the first and the second portion.
Dependencies are inferred from the claim text.