Engine Starter Testing System Using Electric Motor Drive
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Solution Overview
Problem
Conventional endurance cranking tests for engine starters are either restricted by environmental regulations or excessively expensive, and electronic engine simulators fail to accurately replicate all engine conditions, especially in heavy-duty applications.
Innovation Solution
A system comprising a live internal-combustion engine and an electric motor that replaces combustion with motor power, allowing for the measurement of actual engine characteristics like resistance, torque, and RPM during testing, without fuel consumption or exhaust emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a live engine test bench is used for endurance cranking tests, then actual engine characteristics can be measured, but environmental regulations restrict or prohibit such testing due to fuel consumption and exhaust emissions
Solution Approach 1:
An electric motor is introduced as an intermediary device to replace the combustion engine's driving function. The electric motor couples to the crankshaft and provides powered rotation during endurance cranking tests, eliminating the need for fuel combustion while maintaining actual engine mechanical characteristics for accurate starter testing.
2Object-affected harmful factors
If an electronic engine simulator is used for endurance cranking tests, then environmental restrictions are avoided, but the system becomes extremely expensive and unable to replicate all actual engine conditions
Solution Approach 1:
Instead of using a complex electronic simulator that attempts to model engine behavior, the invention uses a physical copy of the actual engine (the real engine block, cylinders, pistons, and crankshaft) that is driven by an electric motor. This physical copying approach maintains authentic mechanical characteristics while avoiding both emissions and expensive electronic simulation systems.
3Object-affected harmful factors
If an electronic engine simulator is used for heavy duty applications, then environmental restrictions are avoided, but the system becomes extremely expensive and not readily available
Solution Approach 1:
The invention replaces expensive, complex electronic simulation systems with a simpler, more affordable setup using an electric motor and actual engine components. This approach makes the testing system more accessible and cost-effective while maintaining testing accuracy for heavy duty engine applications.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables reliable and cost-effective endurance cranking tests for engine starters by using a live engine with motor power, accurately assessing starter performance while avoiding fuel consumption and emissions.
Implementation Method 1
an electric motor that replaces combustion with motor power
Data Source
AI summary
A performance testing system including an engine, a starter under test that is configured to start the engine, and a motor configured to generate power transferred to the engine to run the engine after the engine is started by the starter.