Virtual Propulsion Engineer-3D Combustion, Airflow, Exhaust

General Motors • Pontiac, MI

6d • Hybrid

About The Position

General Motors is seeking an Engine Performance and Calibration 3D CFD Analyst to support development of internal combustion engine technology through high-fidelity computational fluid dynamics simulations. The role focuses on combustion modeling, fuel injection systems, emissions control, and design and optimization of gasoline and diesel combustion chambers. It is categorized as hybrid, with the selected candidate expected to report to a specific location at least three times a week or at a frequency set by their manager. The role may be eligible for relocation benefits. General Motors does not provide immigration-related sponsorship for this role.

Requirements

• At least 5 years of experience with compressible CFD analysis of powertrain-related systems.
• Bachelor's degree in Mechanical Engineering, Aerospace Engineering, or a related field, with a focus on internal combustion engines or fluid dynamics.
• At least 3 years of experience using CFD software for gasoline or diesel mixture-preparation and combustion simulation.
• High proficiency with CFD meshing software such as ProStar, ICEM, Hypermesh, or Tgrid, or equivalent.
• High proficiency with CFD software such as Converge, Siemens CCM+ In-Cylinder Solution, Star-CD, or AVL Fire, or equivalent.
• High proficiency with CFD post-processing software such as Ensight or ProStar, or equivalent.

Nice To Haves

• Master's or Ph.D. in Mechanical Engineering.
• Programming proficiency in Java, MATLAB, or Python, including workflow automation and customization of tools surrounding vendor software.
• Proficiency applying machine learning and data-driven modeling techniques to engine simulations.
• Proficiency with 1D engine simulation software such as GT-Power, WAVE, or AVL Boost, or equivalent.
• Proficiency with engine testing, data acquisition, and calibration tools such as AVL Concerto, Indicom, or ETAS.

Responsibilities

• Design and optimize combustion chamber geometries to improve efficiency, power output, and emissions performance.
• Simulate and interpret combustion processes, heat transfer, cold-start behavior, and catalyst-heating strategies.
• Provide component-level and/or system-level design recommendations to Design Responsible Engineers based on analysis results.
• Use analytical models to analyze fuel preparation and mixture motion, including equivalence ratio and wall wetting.
• Model and analyze fuel injector behavior, spray atomization, spray-wall interaction, and mixture preparation.
• Use 3D CFD codes to analyze in-cylinder combustion.
• Improve standard analysis practices and tools to enhance prediction fidelity or execution speed.
• Participate in product design and development teams and present analysis results to engineering peers and management.
• Document analysis objectives, conclusions, results, and assumptions using a standard report template.
• Work with test engineers to enhance laboratory procedures and develop first-time-capable analysis techniques.
• Stay abreast of new technology and competitive products.
• Collaborate with engine design, calibration, controls, and emissions compliance teams.
• Validate simulation results with experimental data and iterate designs accordingly.
• Document and present findings to technical leadership and project stakeholders.

Benefits

• The role may be eligible for relocation benefits.
• General Motors describes well-being support through its Total Rewards resources; specific benefits are not listed in the posting.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level