Engine Simulation Engineer - GT-POWER

Job Title: Engine Simulation Engineer – GT-POWER

Location: Columbus, IN

Client: Cummins

Job Description

We are seeking an experienced Engine Simulation Engineer with strong expertise in spark-ignited (SI) engine modeling using GT-POWER. The engineer will be responsible for developing, calibrating, and validating detailed 1D engine models and Fast Running Models (FRMs) to support engine performance optimization, fuel efficiency improvements, and advanced engine development.

The role involves correlating simulation results with engine test and 3D CFD data, evaluating engine air-handling systems, and supporting design optimization through predictive modeling and simulation.

Key Responsibilities

• Develop, calibrate, and validate detailed 1D GT-POWER engine models for spark-ignited engines.
• Build and calibrate Fast Running Models (FRMs) for rapid engine performance prediction.
• Model combustion, intake, exhaust, and air-handling processes using appropriate predictive approaches.
• Correlate GT-POWER simulation results with experimental engine test data and 3D CFD results to improve model accuracy.
• Conduct 1D engine cycle simulations to generate boundary conditions for 3D CFD analysis.
• Perform steady-state and transient engine performance simulations.
• Apply thermodynamics, gas dynamics, and heat transfer principles to engine modeling and analysis.
• Analyze intake and exhaust flow behavior, turbocharger matching, and air system sizing.
• Support fuel economy improvement, engine efficiency optimization, and engine performance development.
• Perform GT-SUITE optimization studies and design trade-off evaluations.
• Evaluate model robustness across different engine operating conditions and configurations.
• Support development of simulation and validation plans for new engine configurations.
• Automate modeling and analysis workflows using GT-Python, MATLAB, Python, and Excel.
• Collaborate with internal engineering teams and external suppliers to resolve technical issues and modeling gaps.
• Prepare technical reports documenting modeling assumptions, calibration methods, validation results, and engineering recommendations.
• Communicate simulation outcomes and recommendations to local and global stakeholders.

Required Qualifications

• Strong experience in spark-ignited internal combustion engine modeling using GT-POWER / GT-SUITE
• Hands-on experience building, calibrating, and analyzing detailed 1D engine models.
• Experience calibrating GT-POWER models against experimental engine test data and/or 3D CFD simulation results.
• Experience developing and calibrating Fast Running Models (FRMs).
• Knowledge of GT-SUITE optimization tools and methods.
• Strong understanding of internal combustion engines, thermodynamics, gas dynamics, and heat transfer.
• Experience analyzing engine performance, combustion, intake/exhaust flow, and air-handling systems.
• Proficiency in MATLAB and Microsoft Excel.
• Strong technical documentation, analytical, and communication skills.

Preferred Qualifications

• Experience with GT-Python API or GT-POWER automation tools.
• Programming experience in Python.
• Experience with turbocharger matching and air system optimization.
• Familiarity with 3D CFD simulation and engine development workflows.
• Experience automating simulation, calibration, and post-processing activities.

Education

Bachelor's or Master's degree in Mechanical Engineering, Automotive Engineering, Aerospace Engineering, or a related field.

Key Technical Skills

GT-POWER | GT-SUITE | Spark-Ignited Engine Modeling | 1D Engine Simulation | Fast Running Models (FRM) | Model Calibration & Validation | Engine Performance Optimization | Thermodynamics | Gas Dynamics | Heat Transfer | MATLAB | Excel | Python | GT-Python API