Hybrid Machine Mode Control for Zero-Emission Engine Suppression
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Solution Overview
Problem
Existing hybrid electric machines automatically switch to engine mode when battery levels are low, leading to uncontrolled emissions, excessive fuel consumption, and wear, which can violate zero-emission requirements.
Innovation Solution
A control system that allows operators to disable the engine mode manually when battery levels drop below a threshold, preventing automatic switching and enabling suppression of engine operation, thereby maintaining zero-emission operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the machine automatically switches to engine mode when battery level is below threshold, then uninterrupted operation is ensured, but emissions increase and operator control is lost
Solution Approach 1:
The system dynamically adjusts the automatic engine starting behavior based on real-time battery state of charge levels. When SOC is below a predetermined threshold, the automatic starting function is deactivated, allowing the machine to maintain electric-only operation even with limited battery charge, thereby reducing emissions while ensuring uninterrupted operation through operator awareness and manual intervention options.
Solution Approach 2:
The control system changes the operational parameter of engine starting behavior based on the battery state of charge parameter. By monitoring SOC and adjusting the automatic starting enablement status accordingly, the system optimizes the balance between reliable operation and emissions reduction, allowing operators to maintain control over when engine mode is activated.
2Power
If the machine automatically switches to engine mode when battery level is below threshold, then power supply is ensured, but fuel consumption increases
Solution Approach 1:
The system dynamically controls engine starting based on real-time monitoring of battery state of charge. When SOC falls below the predetermined threshold, automatic engine starting is suppressed, allowing the machine to continue operating on electric power alone. This dynamic adjustment reduces fuel consumption by minimizing unnecessary engine activations while maintaining adequate power supply through the existing battery capacity.
3Duration of action of moving object
If the machine automatically switches to engine mode when battery level is below threshold, then operation continuity is maintained, but engine wear increases
Solution Approach 1:
The control system modifies the engine operation parameter by disabling automatic starting when battery SOC is below the threshold. This parameter change reduces the frequency and duration of engine activations, thereby extending engine service life and reducing wear, while operation continuity is maintained through proactive battery management and operator notification systems.
4Object-generated harmful factors
If the machine operates in electric mode only, then zero emissions are achieved, but operation may be interrupted when battery is depleted
Solution Approach 1:
The system performs preliminary action by monitoring battery state of charge levels and providing advance warning to operators when SOC approaches the predetermined threshold. This allows operators to plan for potential engine activation or battery recharging before complete depletion occurs, ensuring operation continuity while maintaining zero-emission operation as long as possible. The preliminary notification enables proactive decision-making without forcing premature engine startup.
Data Source
AI summary
A control system may include a control of a user interface and a controller. The controller may be configured to cause a machine to operate in a first mode, the machine being configured for hybrid operation in the first mode using a battery without using an internal combustion engine or in a second mode using the internal combustion engine when a level of the battery is below a threshold. The controller may be configured to receive an input, via the control, indicating that the second mode of the machine is to be disabled. The controller may be configured to cause, based on the input and when the level of the battery is below the threshold, suppression of operation of the machine in the second mode.