Conversion of a Small Size Passenger Car to Hydrogen Fueling: Focus on Vehicle Dynamics and ECU Remapping Requirements Universidad de la República

Format:

Book

Conference/Event

Author/Creator:

Martinez, Santiago, author.

Contributor:

Curto, Pedro

Irimescu, Adrian

Merola, Simona

Vaglieco, Bianca Maria

Conference Name:

16th International Conference on Engines & Vehicles (2023-09-10 : Capri, Italy)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2023

Summary:

Converting spark ignition (SI) engines to H2 fueling is an attractive route for achieving zero carbon transportation and solving the legacy fleet problem in a future scenario in which electric powertrains will dominate. The current paper looks at a small size passenger car in terms of vehicle dynamics and electronic control unit (ECU) remapping requirements, in the hypothesis of using H2 as a gasoline replacement. One major issue with the use of H2 in port fuel injection (PFI) engines is that it causes reduced volumetric efficiency and thus low power. The vehicle considered for the study features turbocharging and therefore complete or partial recuperation of lost power is possible. Other specific requirements such as injection phasing were also under scrutiny, especially as PFI was hypothesized to maximize cost effectiveness. A 0D/1D model was used for simulating engine running characteristics as well as vehicle dynamics. One of the main conclusions is that at low rpm there should be only a minor influence on vehicle dynamics, while at the higher end completely comparable performance is achievable. In terms of acceleration, the small passenger car considered for the study loses around 10% performance between 0-100 km/h, but it is possible to have same dynamic response when accelerating from 70-120 km/h. After optimizing the gear shift strategy, the energy consumption between gasoline and H2 version are the same, with zero tailpipe CO2 emissions for the hydrogen

Notes:

Vendor supplied data

Publisher Number:

2023-24-0065

Access Restriction:

Restricted for use by site license