TYMCO Alternative Fuel Powered Street Sweepers
(Compressed Natural Gas)
(Liquefied Petroleum Gas/Propane)
Environmentally Superior Cleaning™
With the ever growing need to address environmental concerns and to meet Federal, State and Municipal air quality requirements, there has been an increasing demand for fleets to add more low emission alternative fuel vehicles (AFVs). TYMCO has been manufacturing alternative fuel street sweepers since 1984. This experience, coupled with our well known reputation for reliability and productivity make TYMCO alternative fuel street sweepers the smart choice. These California Air Resources Board (CARB) verified Ultra Low Emission Vehicles (ULEV), when combined with our proven Regenerative Air System, offer the highest degree of cleaning power available on the market today, while at the same time maintaining and improving the environment.
TYMCO currently offers two forms of alternative fuel for the Model 600: Dedicated CNG (Compressed Natural Gas) and Dedicated LPG (Liquefied Petroleum Gas) - propane, which allows both the sweeper and the chassis engines to operate on alternative fuel, making them CARB and South Coast Air Quality Management District (SCAQMD) Rule 1186.1 compliant.
Street sweepers must be maneuverable in order to get to those hard-to-reach areas. The TYMCO engineered and manufactured alternative fuel powered chassis is designed to provide maximum fuel capacity on the shortest wheelbase available. TYMCO has accomplished this by designing a modular CNG fuel storage rack system and LPG tank that require minimal additional wheelbase, resulting in the tightest turning radius possible, all while providing maximum rear view visibility.
Both the CNG and LPG fuel storage areas are designed to be user friendly. Quick access for fueling, system shut-off valves and pressure reading make the operator's job easier and safer. The large capacity CNG fuel storage cylinders are enclosed for protection, and the roof enclosure is angled and sloped to allow for low hanging tree limbs. Both the CNG and LPG fuel storage areas are mounted in such a way as to allow for maximum sweeper operation. Utilizing the very latest advancements in technology, TYMCO alternative-fuel powered sweepers are specifically engineered to provide the highest degree of performance, safety, and simplicity.
Past - Present - Future
TYMCO®has been actively involved in manufacturing Liquefied Petroleum Gas (LPG) - Propane fuel powered sweepers since 1984 and Compressed Natural Gas (CNG) fuel powered sweepers since 1992. TYMCO currently offers these two choices of alternative fuel powered sweepers on our Model 600®.
Initially all TYMCO CNG conversions were bi-fuel with the engines able to run on gasoline or CNG. Bi-fuel powered sweepers created a trade-off on both gasoline and CNG which led to some issues concerning this configuration. Due to the compensations made in order to run two different fuel types, both applications suffered power loss and had sluggish performance as well as additional complexity. Therefore, TYMCO decided to only manufacture dedicated CNG units in early 1994.
In the early 1990’s, there was a great deal of conversation about alternative fuel; however, the infrastructure to support large numbers of vehicles was not yet in place. CNG seemed to be the most popular alternative fuel choice and many agencies and fleets began converting equipment to CNG power. Several CNG conversion related companies went out of business during this time because the infrastructure was not being completed fast enough to support the growing CNG market. Growth of alternative fuel vehicles continues because of the requirements of The Energy Policy Act (EPAct) that addresses specific fleet type/size and percentages of their fleet that must be alternative fuel powered by certain deadlines. The Energy Policy Act (EPAct) offers incentives to help achieve these percentages by offering assistance such as fuel credits.
In the latter part of 1996 to early 1997, the South Coast Air Quality Management District (SCAQMD) began the process of writing Rule 1186.1 pertaining to alternative fuel powered sweepers with the final adoption of the rule on August 18, 2000. Beginning July 1, 2002, SCAQMD Rule 1186.1 requires that heavy duty street sweeper acquisitions must be alternative fuel vehicles. The California Air Resources Board (CARB) also adopted standards for large spark ignited off-road engines. The CARB emission standards went into effect in 2004, and will probably become increasingly more stringent.
Today, TYMCO is manufacturing more alternative fuel powered sweepers than ever in our 40+ year history. This is due in part to impending government regulations in California as well as a more developed infrastructure that supports alternative fuel equipment. Part of this increase in production is because of funding assistance opportunities made available through various public and private programs.
The future of TYMCO and alternative fuel is positive. The benefits of operating on alternative fuels are enhanced by the unique patented closed loop design of the TYMCO Regenerative Air Sweeper that picks up debris and fine particulates from paved surfaces without exhausting into the air. TYMCO is committed to providing clean-burning CNG and LPG powered sweepers and will continue to do whatever is feasible to meet all current and future alternative-fuel vehicle regulations.