Engine Starter Protection Device Periodic Cranking Control
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Solution Overview
Problem
In engine starting devices with starters and motor/generators, the starter is not driven frequently enough at extremely low temperatures, leading to increased non-driving periods and potential corrosion due to rust or sticking of mechanical components.
Innovation Solution
Implementing a protection device that forces the starter to be driven regularly, even when not needed for engine starting, by setting a forced-driving flag and controlling the starter's operation to ensure periodic cranking, thereby preventing corrosion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the starter is driven only under limited conditions (extremely low temperature), then the motor/generator can handle most starting operations, but the starter suffers from increased non-driving periods leading to corrosion
Solution Approach 1:
The control device periodically drives the starter at predetermined intervals regardless of temperature conditions. This periodic operation prevents corrosion of starter components by ensuring regular movement and operation, while the motor/generator continues to handle the majority of starting operations, maintaining system adaptability.
2Productivity
If the starter is not used frequently, then the motor/generator serves as the primary starting device, but the starter components suffer from corrosion due to prolonged inactivity
Solution Approach 1:
The control device performs preliminary protective action by driving the starter at predetermined intervals even when starting operations are not immediately required. This preventive maintenance approach eliminates corrosion before it can damage components, ensuring the starter remains reliable for when it is needed.
3Reliability
If the starter is forcedly driven on a regular basis, then corrosion is prevented, but additional control complexity is introduced
Solution Approach 1:
The control device automatically manages the starter's periodic operation based on predetermined intervals without requiring complex external monitoring or intervention. The system serves itself by internally tracking when periodic driving should occur and executing the appropriate control signals, maintaining simplicity while ensuring reliability.
Data Source
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AI summary
Disclosed is a protection device of an engine starting device that protects the engine starting device provided with a plurality of starting devices including a starter capable of starting an engine and a motor/generator capable of starting the engine, the engine being started by driving the motor/generator under a first condition, the engine being started by driving the starter under a second condition less generated than the first condition, wherein the starter is forcedly driven on a regular basis.