Ultra-low Emissions of a 48V Mild-Hybrid Gasoline Vehicle with Advanced Emission Control Technologies and System Control
- Delivery
- Provide download link
- Format
- Price
- Non-members (tax incl.)：￥6,600 Members (tax incl.)：￥5,280
- Paper/Info type
- SAE Paper
No.2021-24-0070
- Date of publication
- Sep 2021
- Publisher
- SAE International
- Language
- English
- Event
- International Conference on Engines and Vehicles 2021
Detailed Information
| Author(E) | 1) Joachim Demuynck, 2) Pablo Mendoza Villafuerte, 3) Dirk Bosteels, 4) Gabriele Randlshofer |
|---|---|
| Affiliation(E) | 1) AECC, 2) AECC, 3) AECC, 4) IPA |
| Abstract(E) | Independent third-party testing of Euro6d-(TEMP) gasoline vehicles show low on-road NOx and PN emissions. An ultra-low emission gasoline demonstrator vehicle was built with an integrated approach of emission control technologies, sensors, system controls and hybridisation. The objective is to investigate further potential to reduce the remaining emissions during the cold-start phase directly after engine start as well as from transient accelerations. The baseline Euro 6d vehicle has a 48V mild-hybrid powertrain with a 1.5 litre direct injection engine. The original emission control system was replaced by a system consisting of a close-coupled three-way catalyst (TWC) in combination with an underfloor catalysed gasoline particulate filter (cGPF), second TWC and ammonia slip catalyst (ASC). Reduction of cold-start emissions are targeted with the use of a ccTWC substrate with maximised surface area in combination with early closed-loop lambda control activation. A range of on-road and chassis dyno tests were conducted to investigate the emissions performance of the vehicle. The ambient and driving conditions covered include conditions within and beyond the Euro 6d RDE boundary conditions. A complete set of measurements is conducted in the lab for currently regulated and non-regulated pollutants, including the use of FTIR. Currently non-regulated emissions of PN10, NHR3R and NR2RO are measured on the road as well with a prototype PEMS equipment. Results presented show ultra-low pollutant NOx and PN emissions are achieved while controlling the currently non-regulated species. The vehicle demonstrates efforts to further reduce the impact of internal combustion engines on air quality. This paper describes the preliminary findings. Additional measures to reduce emissions will be investigated on the vehicle. The next steps will be described as part of the outlook. The impact of internal combustion engines on climate change is reduced in the case the vehicle operates on a renewable fuel. The next steps in the project will also investigate repeating tests on an e-gasoline, derived from renewable electricity and captured COR2R. |
