Camshaft assembly for controlling airflow

• Main Author: GREGORY MCCONVILLE
• Format: Patent
• Language: Chinese; English
• Published: 26.08.2022
• Subjects: BLASTING; COMBUSTION ENGINES; CONTROLLING COMBUSTION ENGINES; CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES; ENGINE PLANTS IN GENERAL; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; WEAPONS

The present disclosure provides a camshaft assembly for controlling airflow. Methods and systems are provided for reducing airflow to an emission control device during a fuel shut-off event. In one example, a method may include using a common actuator to adjust a timing of an exhaust valve and a timing of an intake valve of a cylinder during a fuel shut-off event. The actuator may include a planetary gear system configured to rotate a first portion of a camshaft in a first direction and a second portion of the camshaft in an opposite second direction. 本公开提供了"用于控制气流的凸轮轴总成"。提供了用于在燃料切断事件期间减少流向排放控制装置的气流的方法和系统。在一个示例中，一种方法可以包括在燃料切断事件期间使用公共致动器来调整气缸的排气门的正时和进气门的正时。致动器可以包括行星齿轮系统，所述行星齿轮系统被配置为使凸轮轴的第一部分沿第一方向旋转并使所述凸轮轴的第二部分沿相反的第二方向旋转。