This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Hot Wire Mass Gas Flow Sensing Device
Annotation ability available
Sector:
Language:
English
Abstract
The key issue in gas metering of alternative fuel vehicle is to obtain low emission and accurate air-fuel ratio. A hot wire mass air flow sensor can directly monitor the air flow by using thermal transfer amount in an unit time to keep the hot wire at a certain temperature. Surveys were conducted regarding this method and it was verified that this method enables to monitor mass gas flow in applications such as Compressed Natural Gas(CNG) and propane(C3H8). The gas passage body for this sensor, which consists of a 10mm diameter bypass and a main pass has been surveyed and developed. This electrical sensing device for CNG has been completed and its performance was verified with a CNG flow test stand and a CNG engine. We have found that this thermal transfer monitoring method is not affected by a pressure change.
Recommended Content
Citation
Sugiura, M., Okazaki, I., and Saikalis, G., "Hot Wire Mass Gas Flow Sensing Device," SAE Technical Paper 940625, 1994, https://doi.org/10.4271/940625.Also In
References
- Katz Donald L. Kobayashi Riki Poetmann Fred H. Vary John A. Elenbaas Jack R. Weinaug Charles F. “Handbook of Natural Gas Engineering” McGrawhill Book Company, Inc. 1959
- Ueno Sadayasu Sato Kanemasa Ohyama Yoshishige Yamanaka Hisamitsu “Anti-Dirt Property of Hot Wire Air Flow Meter” SAE Paper # 831018
- Sasayama Takao Hirayama Takeshi Amano Matsuo Sakamoto Shinichi Miki Matsuyuki Nishimura Yutaka Ueno Sadayasu “A New Electronic Engine Control System Using a Hot Wire Air Flow Sensor” SAE Paper # 820323
- Snyder Corwin Southwest Research Institute/Gas Research Institute “Gas Flow Test Data” 1992