Single-hole fuel atomization and injection device and front-facing atomization structure thereof

A front atomization structure of a single-hole atomization fuel injector, comprising:

• a tube body, and
• a mounting sleeve provided in the tube body,
• wherein a valve seat for accommodating a valve core is mounted in one end of the mounting sleeve, and a valve hole is provided at a bottom of the valve seat,
• wherein the front atomization structure of the single-hole atomization fuel injector further comprises a fluid distributing member, a fluid-through member, a fluid swirling member and a metering member, which are all mounted in an other end of the mounting sleeve, the fluid distributing member abuts a bottom surface of the valve seat, the fluid-through member abuts a bottom surface of the fluid distributing member, the fluid swirling member abuts a bottom surface of the fluid-through member, and the metering member abuts a bottom surface of the fluid swirling member;
• wherein the fluid distributing member is provided with a plurality of fluid diverting slots extending in radial directions for distributing fluid beam passing through the valve hole into a plurality of strands;
• the fluid-through member is provided with a plurality of fluid-through holes, and a first projection of each of the fluid-through holes on a horizontal plane and a second projection of the respective fluid diverting slot on the horizontal plane have two overlapping parts, i.e., a first overlapping part and a second overlapping part;
• the fluid swirling member is provided with a fluid swirling hole, and the fluid swirling hole is further provided with a plurality of fluid swirling slots in communication with the fluid swirling hole in a circumferential direction of the fluid swirling hole for generating turbulent flow when fluid passes through the fluid swirling slots, and a third projection of each of fluid swirling slots on the horizontal plane and the first projection of the respective fluid-through hole on the horizontal plane have two overlapping parts, i.e., a third overlapping part and a fourth overlapping part;
• and
• the metering member is provided with a metering hole in an opening range of the fluid swirling hole for atomizing a fluid when the fluid passing through the metering hole,
• wherein an inner end of each of the fluid diverting slots is in communication with each other and each of the fluid diverting slots has a shape of a rectangle with an equal size,
• wherein arrangement positions of the fluid-through holes in the fluid-through member are the same as arrangement positions of the fluid diverting slots in the fluid distributing member,
• wherein the first projection of each of the fluid-through holes on the horizontal plane is located at an end of the second projection of the respective fluid diverting slot on the horizontal plane.