The visual design of the car.
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Feminine Hybrid Car Design
Feminine Hybrid Car Design
Spring 2023
PURPOSE
To design a hybrid car marketed towards young car owners seeking to exude elegance and femininity.
Terminology & Definitions
Terminology & Definitions
Powertrain - the system that powers the vehicle forward.
Transmission - the system that moves power from the vehicle's engine to its wheels.
ZE - Zero Emission.
CA - California.
BSFC - Brake-specific Fuel Consumption. A measure of fuel efficiency.
MPG - Miles per Gallon.
POWERTRAIN
My hybrid car was aimed to be marketed towards young car owners seeking to exude elegance and femininity. As a reference to the 2006 Pixar movie Cars, I named my design Sally.
It was assumed that the target audience would highly value a powertrain with high performance and low emissions. To best fulfill this objective, a dual powertrain was utilized in my car design.
The powertrain configuration that chose for my car is the integrated speed and torque coupling configuration that can be found in the Toyota Prius.
A diagram of the powertrain configuration.
VEHICLE SPECIFICATIONS
I identified two market competitors to be the Porsche Taycan and the Land Rover Range Rover Sport, which are popular choices for upper class women. This is because the Porsche Taycan is an electric sports available in a metallic pink color, and the Range Rover is an electric hybrid with excitement features geared towards women (e.g. option of including a fridge in the center console for storing beverages).
The vehicle specifications of my car design versus its competitors.
Pink Porsche Taycan.
Range Rover console fridge.
ENGINE & MOTOR
To meet the power requirements that I calculated for my vehicle, I selected the Mazda MX-5 Miata engine and BMW eDrive synchronous permanent magnet motor. I also opted for the Tesla Model S LR battery.
The vehicle specifications of my car design versus its competitors.
TRANSMISSION DESIGN
In order for my vehicle to compete against the Porsche Taycan, I added 7 gears that allowed for a maximum speed of 140 mph. My design was also theoretically able to accomplish a 0 to 60 mph time of 7.25 seconds.
Gears present in my car design.
MISSION SCENARIO
I detailed the various tasks that my car would be expected to perform on a standard "mission". They included the following:
Acceleration - full throttle from 0 to 60mph.
Deceleration - full brake from 60 to 0mph.
Cruise - 60mph cruise for 20 min using engine only, motor is off.
ZE Cruise - 60mph cruise for 20 min using motor only, engine is off.
Hill Climb (5deg) - 60mph on a 5deg incline for 5 min.
Urban - 25mph for 10min, as is the speed limit in most business and residential areas.
Fast Highway - 80mph for 10 min, as can be the speed of traffic on highways in CA.
RESULTS
Based on estimates of how often these tasks would be performed and for how long, I calculated the power usage, engine speed, engine BSFC, energy usage, and engine/motor energy split for each task. I ultimately found that my car design would have a MPG rating of 9.578, which is absolutely terrible. Luckily, I was just a student and not designing a real car.
A visual respresentation of the flow out of the pipe elbow.
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