Camshaft Control Unit Self-Assignment for Internal Combustion Engines
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing internal combustion engines with multiple camshaft adjusters face challenges in efficiently using common parts while ensuring correct assignment during assembly, leading to increased production costs and assembly confusion due to identical or similar components requiring individual configuration data sets.
Innovation Solution
A system architecture with a predefined linear network topology for camshaft control units allows identical camshaft adjusters and control units to be installed, with a learning process determining their logical assignment post-assembly, using a crankshaft signal and additional signals to establish their position in the chain, enabling identical hardware and software configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If identical camshaft adjusters and control units are used with individual configuration data sets, then manufacturing cost is reduced through common parts, but assembly complexity increases due to confusion during assembly and time-consuming manual configuration
Solution Approach 1:
The camshaft control units automatically determine their own logical assignment and configuration during a learning process after assembly, without requiring manual configuration. Each control unit receives a crankshaft signal and additional signals from adjacent units to establish its position in the chain, eliminating the need for time-consuming manual configuration and reducing assembly complexity while maintaining the use of identical components
Solution Approach 2:
The system performs automatic configuration and logical assignment during a learning process that occurs after assembly but before operation. This preliminary action establishes the correct configuration data sets for each camshaft control unit based on its physical position in the chain, resolving the assembly complexity issue while maintaining manufacturing efficiency through identical components
2Reliability
If individual configuration data sets are stored in each camshaft adjuster, then correct assignment is ensured, but production cost increases and assembly time is extended
Solution Approach 1:
Each camshaft control unit automatically determines its own logical assignment and configuration during the learning process by receiving the crankshaft signal and additional signals from adjacent units. This self-configuration ensures correct assignment accuracy while eliminating the need for manual configuration time, as the system performs the assignment automatically based on signal propagation through the predefined linear network topology
3Reliability
If manual configuration of camshaft control units is performed, then correct assignment is achieved, but labor intensity and assembly time increase significantly
Solution Approach 1:
The camshaft control units perform automatic self-configuration during the learning process by receiving the crankshaft signal and determining their position in the chain through additional signals from adjacent units. This eliminates manual configuration labor entirely while maintaining assignment accuracy, significantly improving assembly efficiency and productivity
Solution Approach 2:
The manual mechanical configuration process is replaced by an automatic electronic signal-based learning process. The system uses electrical signals (crankshaft signal and additional signals) to automatically establish logical assignments, substituting the manual mechanical configuration process with an automated electronic system that improves both accuracy and efficiency
Data Source
Figure 1
Figure 2
AI summary
The invention relates to an internal combustion engine (1) having a plurality of camshaft control units (6, 21, 22, 23, 24) which are connected to one another in a line by a first network topology (16) and via which a crankshaft signal can be transmitted in unprocessed, amplified or conditioned form. The camshaft control units (6, 21, 22, 23, 24) are designed to suppress forwarding of the crankshaft signal in a first state and to forward or to replicate the crankshaft signal and to send an additional signal in a second state. The invention also relates to a method for logically assigning the camshaft control units (6, 21, 22, 23, 24) to the camshafts (3) to be adjusted by them.