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Standards Compliant HIL Bench Development for Dynamic Skip Fire Feature Validation
Technical Paper
2015-01-0171
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Automated software testing for both hardware and software components is one of the ways industry is gaining efficiency in testing. A standard based approach can help in reducing the dependency on one particular tool chain, reduce re-training of engineers, reducing development time and increase collaboration between supplier and OEM's.
Tula's Dynamic Skip Fire (DSF) technology achieves fuel efficiency by activating only the required cylinders required to achieve desired torque. Validation of the DSF algorithms requires reading of the crank, cam, spark, fuel injector, and intake and exhaust actuator positions on an individual cylinder firing opportunity. Decisions made on a cylinder by cylinder basis can be validated.
The testing architecture at its core is based on the ASAM Hardware in the loop (HIL) API standard. Following the HIL-API standard gives the flexibility of choosing the best in class measurement hardware and test case management tools.
Since the test environment is used by multiple engineers from multiple locations, the entire testing environment can be controlled remotely from a powerful web client - referred to as WebCarLab. The web client allows the user to remotely queue different automated tests and also to queue software builds. This allows for up to 100% test bench utilization.
This paper discusses the main advantages of following an industry standard while designing the test architecture, which allows the different components of the test architecture environment to be integrated.
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Citation
Liu, P., Bansal, A., and McKeever, J., "Standards Compliant HIL Bench Development for Dynamic Skip Fire Feature Validation," SAE Technical Paper 2015-01-0171, 2015, https://doi.org/10.4271/2015-01-0171.Also In
References
- Wilcutts , M. , Switkes , J. , Shost , M. , and Tripathi , A. Design and Benefits of Dynamic Skip Fire Strategies for Cylinder Deactivated Engines SAE Int. J. Engines 6 1 278 288 2013 10.4271/2013-01-0359
- Serrano , J. , Routledge , G. , Lo , N. , Shost , M. et al. Methods of Evaluating and Mitigating NVH when Operating an Engine in Dynamic Skip Fire SAE Int. J. Engines 7 3 1489 1501 2014 10.4271/2014-01-1675
- Bansal A. , Muli M. , Patil K. Taming Complexity While Gaining Efficiency: Requirements for the Next Generation of Test Automation Tools IEEE 2013
- Krisp , H. , Lamberg , K., and Leinfellner , R. Automated Real-Time Testing of Electronic Control Units SAE Technical Paper 2007-01-0504 2007 10.4271/2007-01-0504