# What is Hardware-in-the-Loop?

Testing that runs real ECU hardware against a simulated vehicle and environment in real time.

## In real work

HIL bench caught the valve timing fault before we burned hours on the physical test stand.

## Related terms

- [ADAS](https://prompthausapp.com/learn/adas.md)
- [Sensor Fusion](https://prompthausapp.com/learn/sensor-fusion.md)
- [Perception Stack](https://prompthausapp.com/learn/perception-stack.md)
- [Domain Controller](https://prompthausapp.com/learn/domain-controller.md)
- [Driving Automation Level](https://prompthausapp.com/learn/driving-automation-level.md)

## How is this different from Googling it?

Google gives a definition. Prompthaus pairs each term with how it shows up in standups, PRs, prompts, and design reviews—then quizzes you until the word sticks. One term a day on iPhone.

- Category: Automotive
- HTML: https://prompthausapp.com/learn/hardware-in-the-loop
- App Store: https://apps.apple.com/us/app/prompthaus-ai-vocabulary/id6776314407