Selectable One-Way Clutch Assembly for Multi-Mode Torque Control
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Solution Overview
Problem
Current vehicle powertrain systems with multiple clutch elements lack efficient control over torque transmission and rotation direction, limiting their operational modes and flexibility in applications such as electric vehicles.
Innovation Solution
A clutch assembly incorporating four independently operating selectable one-way clutches, including controllable mechanical diode clutches and dynamic controllable clutches, which allow for multiple modes of torque transfer and rotation control by engaging and disengaging locking elements, enabling sixteen distinct operational modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional powertrain systems use multiple clutch elements, then torque transmission is achieved, but control over rotation direction and operational flexibility are limited
Solution Approach 1:
The clutch assembly is divided into four independent selectable one-way clutches (first, second, third, and fourth clutches), each capable of independent engagement and disengagement. This segmentation allows each clutch to control specific torque transmission paths and rotation directions, thereby achieving sixteen distinct operational modes and significantly improving operational flexibility without requiring a completely redesigned system architecture.
Solution Approach 2:
The patent implements dynamically controllable clutches where locking elements can be selectively engaged or disengaged based on operational requirements. This dynamic control mechanism allows the system to switch between different operational modes in real-time, enabling adaptive torque transmission and rotation direction control, thus resolving the contradiction between versatility and complexity by providing programmable flexibility within a structured framework.
2Measurement precision
If conventional clutches use basic engagement mechanisms, then structural simplicity is maintained, but control precision over torque transmission is insufficient
Solution Approach 1:
The patent introduces locking elements as intermediary components between the clutch members that provide precise mechanical engagement control. These locking elements act as mediators that can be selectively positioned to engage or disengage torque transmission paths, enabling precise control over torque transmission without requiring complex electronic or hydraulic control systems, thus achieving high control precision with moderate mechanical complexity.
Data Source
AI summary
A clutch assembly or module having multiple one-way clutches, each clutch operates independently of the others to control torque transmission to and from a common or shared notch plate. The assembly or module also controls rotation, including the direction thereof, of the common or shared notch plate. Depending upon the position of each one-way clutch, multiple modes of torque transfer and common or shared notch plate rotation can be achieved.