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2009-09-22_PWETC_AgendaPacket
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2009-09-22_PWETC_AgendaPacket
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Commission/Committee
Commission/Authority Name
Public Works Commission
Commission/Committee - Document Type
Agenda/Packet
Commission/Committee - Meeting Date
9/22/2009
Commission/Committee - Meeting Type
Regular
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Review ofi Trash <br />Collection <br />Impacts <br />IZ3 <br />Operate-at-idie Technology <br />Operate-at-idle technology can also reduce emissions. Operate- <br />at-idle systems allow an engine to run at much lower revolutions <br />per minute (RPM} and thus conserve diesel when compared with <br />collection vehicles that do not have the technology. Operate-in- <br />gear-at-idle systems save fuel by using a larger hydraulic pump <br />that produces the extra flow of fluid needed for a trash collection <br />vehicle to load and compact garbage at standard speeds while the <br />engine remains at idle. Without the systems, truck operators must <br />shift the transmission and throttle the engine to power the <br />hydraulic system every time they make a route stop or want to <br />pack the load. There is minimal effect on truck performance and <br />fuel savings of as much as 20% have been attributed to operate- <br />at-idle systems.13 Operate-at-idie technology is generally standard <br />on all new side loading equipment. Retrofitting existing vehicles <br />can be done at a cost of from $1,500 to $10,000. Truck <br />manufacturers are just starting to test operate-at-idle technology <br />on rear- and front-loading vehicles. <br />An added advantage of operate-at-idle technology is that it <br />significantly reduces engine noise. Most of the loud engine noise <br />associated with garbage trucks comes from revving the engine to <br />pack the load. With an operate-at-idle trash truck the hydraulic <br />system is capable of packing without revving the engine and <br />generating the associated engine noise. <br />Automatic Engine Shut-Off Systems <br />Idling engines cart burn up to one (1) gallon of fuel per hour. On- <br />board engine controls can be installed that automatically cut oft <br />the engine after a set time period if a driver leaves it idling. Waste <br />Connections, a national solid waste management firm, has <br />installed automatic engine shut off devices on some of their <br />vehicles that shut the engine down after five mina#es of idling. This <br />five minute standard is consistent with the proposed time frame in <br />EPA's Model State Idling Law. <br />Other Options <br />On the horizon, several other fuel and technologies are being <br />tested in prototype vehicles including: <br />Hybrid-electric drive trains <br />Bio-methane (biofuels) <br />While these technologies may offer future benefits they have yet <br />to be proven in a large scale commercial environment. Volvo, <br />however, recently introduced the first hybrid garbage truck in <br />Sweden. If testing goes well, Volvo plans to begin producing the <br />,s Ideal Idle Idea K. Sim son Waste A e 5e 1 200 1 <br />P 9 ~ P 6 2.00 PM <br />Section 2 - 10 <br />
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