Cam Carrier Insert for Engine Valve Packaging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cam carrier systems for engine cylinder heads do not adequately support variable displacement engine mechanisms for deactivatable intake and exhaust valves and lack space for additional components like fuel pumps, limiting engine performance and packaging efficiency.
Innovation Solution
A cam carrier insert is mounted to the cylinder head, providing bearing support for a variable displacement engine mechanism and camshaft, allowing for the deactivation of specific valves while non-deactivatable valves remain operational, and accommodating additional components like fuel pumps by optimizing engine architecture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cam carrier is directly mounted to the cylinder head via fasteners, then movement and vibration of the assembly are minimized, but space for additional components like variable displacement engine mechanism and fuel pump is insufficient
Solution Approach 1:
The cam carrier assembly is segmented into a cam carrier body and separate support structures (cam bearing towers) that are integrated with or mounted to the cylinder head. This segmentation allows the cam carrier to be positioned optimally for stability while creating dedicated spaces for additional components like the variable displacement engine mechanism and fuel pump within the cylinder head architecture.
2Adaptability or versatility
If the cylinder head is designed to accommodate all engine components, then packaging efficiency is improved, but the structure becomes overly complex and difficult to manufacture
Solution Approach 1:
The cam carrier insert is designed as a universal component that can be mounted to various cylinder head configurations. It provides multiple functions: supporting the cam shaft, providing a mounting base for the variable displacement engine mechanism, and creating space for the fuel pump. This multi-functionality allows a single component design to accommodate different engine architectures without requiring complex custom cylinder head structures.
3Adaptability or versatility
If extensive machining is performed on the cylinder head to accommodate VDE mechanism, then component integration is improved, but manufacturing cost and complexity increase
Solution Approach 1:
The cam carrier insert is designed with pre-integrated support features and mounting interfaces that can be added to the cylinder head through simple operations like drilling and tapping, rather than requiring extensive machining. The insert itself is pre-configured with bearing surfaces, mounting holes, and structural features that enable VDE mechanism integration without complex cylinder head modifications.
Data Source
AI summary
Methods and systems are provided for a cam carrier insert coupled to a cylinder head of an engine. In one example, a system may comprise: a cylinder head with a cam bearing tower; a cam carrier insert positioned in the cylinder head; and a camshaft, the camshaft directly supported by the cam bearing tower and directly supported by the cam carrier insert. By mounting a first portion of the cam shaft to the cam bearing tower and a second portion of the cam shaft on the cam carrier insert, the system may operate deactivatable and non-deactivatable intake or exhaust valves of one or more engine cylinders in the engine. In this way, packaging of engine components within the cylinder head may be improved while promoting better engine performance.