Cold Start HC Emission Reduction Using Targeted Fuel Heating 2022-28-0022
A large quantity of fuel is injected into the cold manifold of the engine to enable a quick start. A substantial part of this fuel gets deposited on the manifold walls leading to the formation of a fuel pool. Improper fuel vaporization during the engine cold start leads to the formation of a large amount of HC emissions. In the present investigation, a small flexible polyamide strip heater was placed at a specific location where the fuel impingement happens to enhance fuel vaporization in a 4-stroke motorcycle engine. The heater was turned on 20 seconds before the engine started. A temperature controller was used to maintain the heater at 323 K. The emission data for 180 seconds from the engine start was measured. Initial tests were carried out without the heater to establish the baseline emissions. Later, tests were carried out with the heater switched on and compared. The results showed a 32 % reduction in cumulative HC emissions with the use of the heater. Additionally, it was also observed that CO and CO2 emissions were reduced by 56 % and 14 % respectively due to reduced fuel consumption when the heater was used.
Citation: Teja, R., V, A., M, H., and Rayavarapu, R., "Cold Start HC Emission Reduction Using Targeted Fuel Heating," SAE Technical Paper 2022-28-0022, 2022, https://doi.org/10.4271/2022-28-0022. Download Citation
Author(s):
Ravi Teja, Avaneesh Athreya V, Himabindu M, Ravikrishna Rayavarapu
Affiliated:
Indian Institute of Science
Pages: 6
Event:
10TH SAE India International Mobility Conference
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Starters and starting
Fuel consumption
Manifolds
Heating, ventilation, and air conditioning systems (HVAC)
Emissions
Engines
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