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Active Type Variable Intake System
Technical Paper
2011-28-0088
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In this paper, an active type variable intake system is proposed, which improves both engine power and NVH performance. The proposed system uses a magnet valve to control the air path to the engine intake manifold.
While other types of variable intake system such as vacuum actuator type or DC motor type need an ECU to control the valve, the proposed system only uses force equilibrium between magnetic force and vacuum pressure, resulting in weight and cost reduction.
The system is composed of dual duct (duct A, duct B) and a magnet valve. In low RPM region, the magnet valve is closed and only duct A is used to supply air into the engine. In high RPM region the valve opens up and maximizes the amount of the air that goes into the engine intake manifold. The result is that the output power of the engine is maximized in high RPM region, as well as the NVH performance is improved in low RPM region.
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Authors
Citation
Jang, Y., "Active Type Variable Intake System," SAE Technical Paper 2011-28-0088, 2011, https://doi.org/10.4271/2011-28-0088.Also In
References
- Munjal, M. L. “Acoustics of ducts and mufflers with application to exhaust and ventilation system design” Wiley-Interscience 1987
- Moser, M. “Engineering acoustics - An introduction to noise control” Springer 2004
- HMC internal test report “Vehicle A intake system pressure resistance test report” 2007
- HMC internal test report “Proposal for intake noise improvement of Vehicle A” 2007
- HMC internal test report “Vehicle G dual duct intake system test report” 2007
- HMC internal test report “Magnet type variable intake system NVH test report” 2007