All Things Green Bob Feldmaier Center for Advanced Automotive Technology.

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Presentation transcript:

All Things Green Bob Feldmaier Center for Advanced Automotive Technology

Green Fleets Executive Order 13514, Federal Leadership in Environmental, Energy, and Economic Performance, signed on October 5, 2009, establishes “an integrated strategy towards sustainability in the Federal Government and makes reduction of greenhouse gas emissions a priority for Federal agencies.” The Vision: Federal fleets will lead by example to help “create a clean energy economy that will increase our Nation’s prosperity, promote energy security, protect the interests of taxpayers, and safeguard the health of our environment.” Federal fleets will reach this vision by reducing fleet GHG emissions through reduced petroleum consumption.

Green Fleets On April 5, 2010, DOE issued “Guidance for Federal Agencies on Executive Order Section 12—Federal Fleet Management,” fulfilling the Section 12 requirement of Executive Order for DOE to issue comprehensive guidance on Federal fleet management.

Plug-In Electric Vehicle Basics What makes Plug-In Electric Vehicles (PEVs) unique is their ability to charge from an off-board electric power source. In other words, PEVs can be “plugged in.” This feature distinguishes them from Hybrid Electric Vehicles (HEVs), which supplement power from an ICE or other propulsion source with battery power but cannot be plugged in. There are two basic types of PEVs: Electric Vehicles (EVs) and Plug-In Hybrid Electric Vehicles (PHEVs). All-Electric Vehicles (EVs) EVs (also called battery-electric vehicles or BEVs) use batteries to store the electrical energy that powers one or more motors. The batteries are charged by plugging the vehicle into an electric power source. EVs can also be charged in part by regenerative braking, which generates electricity from some of the energy normally lost when braking. EVs use no petroleum based fuel while driving and therefore produce no tail-pipe emissions.

PHEV System Design There are two categories of PHEV systems, which differ in how they combine power from the electric motor and the engine. – Parallel PHEVs connect the engine and the electric motor to the wheels through mechanical coupling. Both the electric motor and the engine can drive the wheels directly. – Series PHEVs use only the electric motor to drive the wheels. The ICE is used to generate electricity for the motor. The Chevy Volt uses a slightly modified version of this design: the electric motor drives the wheels almost all of the time, but the vehicle can switch to work like a parallel PHEV at highway speeds and/or when the battery is depleted.

Factors That Affect Efficiency and Range The efficiency and driving range of PEVs varies substantially based on driving conditions and driving habits. – Extreme outside temperatures tend to reduce range because more energy must be used to heat or cool the cabin. Cold batteries do not provide as much power as warm batteries do. – The use of electrical equipment, such as windshield wipers and seat heaters, can reduce range. – High driving speeds reduce range because more energy is required to overcome increased air resistance. – Rapid acceleration reduces range compared with smooth acceleration. – Hauling heavy loads or driving up significant inclines also reduces range.

PEV Benefits What can PEVs do for your fleet? They can lower your operating costs and help you comply with government policies while demonstrating your commitment to environmental protection and energy security. High Fuel Economy, Low Operating Cost PEVs can reduce your fleet’s fuel costs dramatically because of the low cost of electricity versus conventional fuel. Because PEVs rely in whole or part on electric power, their fuel economy is measured differently than in conventional vehicles. You might see it stated as miles per gallon of gasoline equivalent (mpge). Or it may be broken down by kilowatt-hours (kWh) per 100 miles for EVs and the electric mode of PHEVs, and miles per gallon (mpg) for the ICE mode of PHEVs. Depending on how they’re driven, today’s EVs (or PHEVs in electric mode) can exceed 100 mpge. Powering a light-duty PEV with electricity costs only 3 to 5 cents per mile. In contrast, fueling a gasoline car that has a fuel economy of 27.5 mpg costs about 14 cents per mile. If 15,000 miles are driven per year, driving the PEV in all-electric mode instead of driving the conventional gasoline car could save $1,300 to $1,600 in annual fuel costs. The fuel economy of medium- and heavy-duty vehicles is highly dependent on the load carried and the duty cycle, but PEVs maintain a strong fuel-cost advantage in this category of vehicles as well.

PEV Benefits

Charging PEVs Typical Charging Rates The rate at which charging adds range to a PEV depends on the vehicle, the battery type, and the type of Electric Vehicle Supply Equipment (EVSE). The following are typical rates for a light-duty vehicle: Level 1: 2 to 5 miles of range per hour of charging Level 2: 10 to 20 miles of range per hour of charging DC fast charging: 60 to 80 miles of range in 20 minutes of charging

Installation Costs EVSE installation costs vary considerably, so be sure to do your homework and get a number of price quotes before moving forward. The City of Houston reported installation costs varying from $860 to $7,400 per unit, not including the cost of the EVSE units themselves. Factors affecting the cost (and installation time) include the number of circuits and EVSE units installed, indoor versus outdoor installation, required electrical upgrades, required ventilation, and the use of DC fast charging EVSE. If required, trenching and adding electrical service/panels incur the most cost. According to the Rocky Mountain Institute/Project Get Ready, the cost of a Level 2 EVSE unit, not including installation costs, is approximately $1,000 to $7,000 (before incentives) depending on the level of sophistication. DC fast charging EVSE units are projected to cost $20,000 to $50,000, but manufacturers are working to decrease costs substantially.

Green Fleets The Green Fleets program brings advanced transportation technologies and alternative fuel solutions to fleets throughout Michigan. Clean Energy Coalition is managing this U.S. Department of Energy program — funded by the American Reinvestment and Recovery Act — to deploy clean-fueled vehicles and build the necessary infrastructure to support them. This four-year, $40 million project brings together a diverse cross-section of Michigan fleets, which are adopting electric, hybrid, propane, and compressed natural gas vehicles. Green Fleets partners will put over 500 cleaner vehicles on the road and build more than 50 alternative fueling stations to support them. In addition to cleaner air and reduced dependency on foreign oil, Green Fleets is commercializing cutting-edge technology and manufacturing capability, all while creating jobs right here in Michigan. Based on data drawn from an Argonne National Laboratory model, Green Fleets projects will displace at least 1.5 million gallons of petroleum per year, and more than 13 million gallons during the anticipated average 10-year equipment life cycle. The type of vehicle that is best must be determined by doing a business case for your particular situation.