Hybrid Module Integrated Electronic Pump Actuator
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Solution Overview
Problem
Existing hybrid modules relying on transmission hydraulics to actuate connect/disconnect clutches require structural and functional modifications, limiting their modularity and independence from the transmission.
Innovation Solution
A self-contained hybrid module with an integrated electronic pump actuator that hydraulically actuates the connect/disconnect clutch, eliminating the need for transmission hydraulics and enabling independent operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If transmission hydraulics are used to actuate the connect/disconnect clutch, then the clutch can be actuated, but the hybrid module requires structural and functional modifications to the transmission, reducing modularity and independence
Solution Approach 1:
The hybrid module is segmented as a self-contained unit with its own integrated electronic pump actuator and hydraulic system, separate from the transmission hydraulic system. This allows the hybrid module to be installed and removed independently without modifying the transmission structure.
Solution Approach 2:
An electronic pump actuator serves as an intermediary component, providing hydraulic actuation for the clutch independently of the transmission hydraulic system. This mediator enables the hybrid module to function autonomously while interfacing with the transmission only through the clutch mechanism.
2Ease of manufacture
If transmission hydraulics are used to actuate the clutch, then clutch actuation is achieved, but hydraulic passages must be modified and re-routed in the transmission
Solution Approach 1:
The hydraulic actuation system is segmented into a self-contained electronic pump actuator within the hybrid module, eliminating the need to modify transmission hydraulic passages. The actuator includes its own pump, control valve, and fluid reservoir, making installation straightforward without complex hydraulic re-routing.
Solution Approach 2:
The electronic pump actuator is a self-service system that generates its own hydraulic pressure and controls clutch actuation independently. It includes an integrated control valve and fluid reservoir, requiring no external hydraulic infrastructure from the transmission.
3Reliability
If transmission hydraulics are used, then the existing hydraulic system can be utilized, but the hybrid module cannot operate independently of the transmission
Solution Approach 1:
The hybrid module is designed as a segmented, independent unit with its own electronic pump actuator and hydraulic system. This segmentation allows the module to operate independently of the transmission, enhancing reliability by eliminating dependency on transmission hydraulic functionality.
Solution Approach 2:
The electronic pump actuator acts as an intermediary that provides independent hydraulic actuation, mediating between the electrical control system and the mechanical clutch without requiring transmission hydraulic infrastructure. This enables autonomous operation of the hybrid module.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides a modular, self-contained hybrid unit that can operate independently of the transmission, reducing the need for hydraulic modifications and re-routing, enhancing efficiency and controllability by eliminating the reliance on transmission hydraulics.
Implementation Method 1
The actuator is configured for hydraulically actuating the clutch between the engaged orientation and the disengaged orientation
Data Source
AI summary
A hybrid module is configured for arrangement in the torque path upstream from a transmission and downstream from an internal combustion engine. The hybrid module includes a housing, an electric motor including a stator non-rotatably fixed to the housing and a rotor rotatable within the stator, a shaft configured for non-rotatably connecting to a crankshaft of an internal combustion engine and a clutch having a clutch output non-rotatably fixed to the rotor. The clutch is configured for being actuated between an engaged orientation for drivingly connecting the shaft to the clutch output and a disengaged orientation for drivingly disconnecting the shaft from the clutch output. The hybrid module also includes an actuator fixed to the housing. The actuator is configured for hydraulically actuating the clutch between the engaged orientation and the disengaged orientation.