Week 5: Vehicle Component Percentage

In week five, research was conducted online to find out and extrapolate manufacturing data to figure out the percentage of vehicle weight that each component represented. In addition, we researched how much of each type of material went into the production of each component.

Below are several tables representing the manufacturing data for the Prius and Hummer. Information was acquired directly from the GREET 2 model of 2014.

Body Material	Prius (%)	Hummer (%)
Steel	68.3	68.3
Wrought Aluminum	0.70	0.70
Copper	1.90	1.90
Glass	6.30	6.30
Plastic	18.1	18.1
Rubber	0.50	0.50
Other	4.00	4.00

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Powertrain	Prius (%)	Hummer (%)
Steel	48.4	39.3
Iron	24.0	28.6
Cast Aluminum	14.4	17.1
Copper	2.60	2.90
Plastic	8.40	9.30
Rubber	2.20	2.60

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Transmission	Prius (%)	Hummer (%)
Steel	60.5	30
Copper	18.9	0
Cast Iron	0	30
Wrought Iron	20	30
Plastic	0.2	5
Rubber	0	5
Other	0.4	0

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Chassis	Prius (%)	Hummer (%)
Steel	84.1	84.1
Cast Iron	6.9	6.9
Cast Aluminum	1.0	1.0
Copper	1.2	1.2
Plastic	1.8	1.8
Rubber	4.4	4.4
Other	0.6	0.6

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Tractor Motor	Prius (%)
Steel	36.1
Cast Aluminum	36.1
Copper	27.8

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Generator	Prius (%)
Steel	36.1
Cast Aluminum	36.1
Copper	27.8

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E Controller	Prius (%)
Steel	5
Cast Aluminum	46.9
Copper	8.2
Rubber	3.7
Plastic	23.8
Other	12.4

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Component	Prius (%)	Hummer (%)
Powertrain	17.0	25.7
Transmission	7.20	6.30
Chassis	24.5	23.9
Tractor	2.10	0
Generator	2.10	0
E Controller	1.80	0
Body	45.3	44.1

Week 4: Wells to Pumps to Wheels

In week four, the approach to gathering information about the energy efficiency of different hazardous wastes was shaped and numerical examples were calculated.

Although the numerical data for select pollutants such as methane gas (CH4) are not available online, others such as carbon monoxide (CO) have been measured and documented for our group to utilize. In addition, the minimum emissions standard level to pass the EPA test are given. By taking the accounted values and dividing them by these minimum standard levels, we can get a rough estimate of how efficient that vehicle is compared to an average vehicle.

First, the quantities of different wastes emitted by our test vehicles will be compared to those of a standard average vehicle, yielding a percentage value. Next, we will acquire the percentage values for other pollutants such as nitrous oxide (NO). Then, the mean percentage will be calculated from all the previous data and plugged into the GREET 1 model. Finally, this comprehensive model will utilize the wells-to-wheels model, which includes the emissions for transportation of fuel from wells to pump stations and from these stations to vehicles on the road. The resulting data will reveal the lifetime emission and power consumption from usage.  This includes the energy and pollutants used from transporting the gasoline, but does not include those used in the manufacturing of the vehicle. Below are two tables with the Prius and Hummer data. (http://www.epa.gov/otaq/cert/veh-cert/cert-tst/08actrr.csv)

Toyota Prius
Pollutants	Tested Amount (g/mi)	Maximum to Pass (g/mi)	Percentage of Maximum (%)
CO-US06	0.10	11.1	0.90
HC-NM+NOX-US06	0.03	0.14	21.43
CO-SCO3	0.20	3.70	0.54
CO	0.10	2.10	4.76
HC-NM+NOX-COMP	0.03	0.62	4.84
NMOG	0.009	0.055	16.36
NOX	0.01	0.03	33.3
HC-NM+NOX-SCO3	0.04	0.20	20.0

*US06, COMP and SC03 are federal government standard test cycles.  

GM Hummer
Pollutants	Tested Amount (g/mi)	Maximum to Pass (g/mi)	Percentage of Maximum (%)
CO-US06	1.17	11.1	10.5
HC-NM+NOX-US06	0.029	0.14	20.7
CO-SCO3	0.930	3.70	25.1
CO	0.930	2.10	44.3
HC-NM+NOX-COMP	0.058	0.62	9.35
NMOG	0.052	0.055	95.3
NOX	0.019	0.03	63.3
HC-NM+NOX-SCO3	0.070	0.20	35.0

*US06, COMP and SC03 are federal government standard test cycles.