Cold Performance Challenges with CNG PFI Injectors

2013-01-0863

04/08/2013

Event
SAE 2013 World Congress & Exhibition
Authors Abstract
Content
Compressed Natural Gas (CNG) is gaining popularity as a viable alternate transportation fuel in many regions of the world. Injectors capable of delivering pressurized gaseous fuels have been developed for this emerging vehicular market segment. CNG fuel injectors must be designed to be compatible and durable with a very low lubricity gaseous fuel to meet automotive OEM life expectancy standards. Traditional gasoline injectors utilize a “hard/hard” sealing configuration, in which both the valve and seat are constructed out of hard metals. When properly lubricated with liquid fuels, these valves can meet vehicular injector leak and flow durability requirements. However, metal valves operating without lubrication can experience excessive wear, which leads to unacceptable levels of gas leakage and flow shifts. The use of elastomer-to-metal sealing surfaces minimizes leakage, but may cause cold ambient operation challenges. In this paper we will provide an overview of a compressed natural gas port fuel injector and associated test results for meeting both durability and cold performance challenges.
Meta TagsDetails
DOI
https://doi.org/10.4271/2013-01-0863
Pages
10
Citation
Bircann, R., Kazour, Y., Dauer, K., Fujita, M. et al., "Cold Performance Challenges with CNG PFI Injectors," SAE Technical Paper 2013-01-0863, 2013, https://doi.org/10.4271/2013-01-0863.
Additional Details
Publisher
Published
Apr 8, 2013
Product Code
2013-01-0863
Content Type
Technical Paper
Language
English