Vehicle Control Unit Memory Signal for Engine Shutdown Transparency
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Solution Overview
Problem
Customer complaints arise when automatic switch-off or switch-on processes of vehicle engines are not executed despite meeting the necessary conditions, leading to confusion for both customers and workshop staff, as existing systems lack transparency in explaining why the engine was not switched off or on.
Innovation Solution
A control unit that sends memory signals to a storage unit when switch-off or switch-on prevention conditions are met, allowing for the storage of specific memory entries that explain why the automatic process was not initiated, including status, mileage, and frequency of these conditions, enabling clearer understanding and documentation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If automatic switch-off control is implemented to reduce fuel consumption and emissions, then fuel efficiency improves, but customer understanding and acceptance deteriorate when the engine is not switched off as expected
Solution Approach 1:
The patent implements a feedback mechanism by storing and communicating information about why automatic switch-off was prevented. The control unit records prevention conditions (such as battery state of charge, climate control status, or other system requirements) and makes this information available to the driver through the vehicle's display system. This feedback loop allows customers to understand the rationale behind the engine not being switched off, thereby maintaining acceptance while preserving the fuel-saving functionality.
Solution Approach 2:
The patent introduces an intermediary information system that mediates between the automatic switch-off control logic and the customer. Instead of directly confronting the customer with unexplained engine behavior, the system uses an intermediate communication layer (display messages, warnings, or status indicators) to explain the decision-making process. This intermediary translates complex control logic into customer-understandable information, resolving the contradiction between automation and customer comprehension.
2Object-generated harmful factors
If automatic switch-off control is implemented, then emissions are reduced, but diagnostic capability in workshops deteriorates due to lack of information about non-execution reasons
Solution Approach 1:
The patent applies preliminary action by storing diagnostic information about switch-off prevention conditions before the vehicle is serviced. The control unit continuously monitors and records the reasons why automatic switch-off was prevented (such as battery charge level, climate control demands, or system faults) and preserves this data in memory. When the vehicle is taken to a workshop, this pre-stored information is already available, eliminating the need for diagnosticians to investigate the causes of non-execution and enabling immediate understanding of the system's behavior.
3Reliability
If switch-off prevention conditions are enforced to ensure system safety, then system reliability improves, but customer acceptance deteriorates due to lack of transparency
Solution Approach 1:
The patent uses feedback to communicate the necessary connection between switch-off prevention conditions and system safety. By displaying information about why the engine cannot be switched off (such as 'climate control requires engine running' or 'battery charge level insufficient'), the system transparently conveys the safety and operational reasons for maintaining engine operation. This feedback builds customer trust and acceptance by demonstrating that the system is making deliberate, safety-conscious decisions rather than arbitrary ones.
Data Source
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AI summary
The invention relates to a control unit (SE) for controlling an automatic shutdown of a vehicle motor in a motor vehicle, the control unit emitting a shutdown signal for effecting appropriate shutdown actions in order to automatically shut down the vehicle motor when prescribed shutdown request conditions (AA) are met and no prescribed shutdown prevention condition is met. According to the invention, the control unit emits a memory signal (a1; a2; a3) for storing at least one memory entry associated with a shutdown prevention condition in a memory unit (Sp) if prescribed conditions are met. Analogously, a control unit is configured for controlling an automatic start-up.