The Journal of Engine Research

The Journal of Engine Research

Performance and fuel consumption simulation for optimized manual transmission gear ratio selection

Document Type : Original Article

Author
Alireza Batooei
School of Automotive Engineering, Iran University of Science and Technology, Tehran, Iran
10.22034/er.2025.2058229.1091
Abstract
The performance and fuel consumption are simulated for the vehicle equipped with manual transmission by GT in this research. The choice of gear ratio for legal compatibility and fuel consumption and performance targets is performed when the engine is finalized for powertrain system in the initial state of project. The important targets design selected as gradeability in 8–12–20–24 -30 (%), maximum speed (km/h), 0-100 km/h, in gear acceleration (s) in each gear and fuel consumption in this research. The four suggested gear ratios which available and produced by supplier are chosen and simulated, and the optimum gear ratios are selected by comparison with vehicle targets and design maturity. The experimentally results are used for the validation and the comparison between experimental and simulation results is done . Fuel consumption (l/100km) and 0-100 (Zero to on handreed kilometer-(s)) acceleration are simulated by 3.3% and 7.4 % error, respectively.
Keywords
Performance Simulation
Fuel Consumption
Optimum Gear Ratio Selection
Engine and Transmission Integration
Vehicle Target
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  • Receive Date 18 May 2025
  • Revise Date 30 May 2025
  • Accept Date 04 June 2025