MAHLE Pendulum-Slider Oil Pump reduces fuel consumption and emissions
MAHLE's Pendulum-Slider Oil Pump
TROY, Mich. June 17, 2014 –MAHLE Filter Systems – North America sees growth opportunities for its patented pendulum-slider oil pump technology.
Already proven in use on combustion engines, MAHLE studies show its pendulum-slider pump can reduce CO2 emissions by three to four percent and boost fuel economy as well.
“Reductions in CO2 will depend on control strategies and driving cycles,” notes Emilee Drew, segment manager for MAHLE Filter Systems – North America. “When our controlled-pump technology is applied, it also offers advantages with respect to fuel efficiency, variable shifting and other control strategies.”
With MAHLE‘s pendulum-slider pump, pressure and volume flow are generated only as demand requires, reducing power consumption to a minimum. Primary advantages of the MAHLE pump compared to other controlled oil pumps (such as external-gear pumps and vane pumps) include:
Resistance to dirt (such as particles or soot)
High overall efficiency over entire service life
Suitability for high rotational speeds
Ability to use various control strategies with short adjustment and response times
An actively controlled pendulum-slider pump and a passively controlled vane pump, have almost identical power consumption rates at an oil temperature of 30 degrees Celsius and low pressure.
At greater system pressures, however, the savings potential for MAHLE‘s pump increases significantly above 2,000 rpm. At greater oil temperatures, power consumption at all measured system pressures above 3,000 rmp is 50 percent less than competing pumps due to the high volumetric efficiency of the pendulum-slider oil pump.
The term “controlled oil pump” covers both pressure-controlled and volume-flow-controlled pumps. In conventional oil pumps, volume flow and pressure are dependent on engine speed, but in pressure-controlled units maximum pressure is limited by a control valve. When maximum pressure is reached, excess volume flow is rerouted directly to the oil pan. In volume-controlled oil pumps, pressure and volume flow are generated on demand to minimize required pumping capacity.
Control strategies determine the CO2 –lowering potential of the volume-flow-controlled oil pump. There are three types of control strategy: single-stage, multiple-stage and fully variable. Fully variable control shows the greatest potential for lowering CO2 emissions.
The pendulum-slider pump currently is produced at MAHLE facilities in Germany and China.
As a leading global development partner for the automotive and engine industry, MAHLE offers unique systems competence in combustion engines and engine peripherals.
With its two business units -- Engine Systems and Components and Filtration and Engine Peripherals -- the MAHLE Group ranks among the auto industry’s top three systems suppliers worldwide. The Behr Group was integrated into the MAHLE Group at the start of 2014; it is now trading as MAHLE Behr and makes up the Thermal Management business unit. Consequently, MAHLE also ranks among the leading OEMs worldwide in vehicle air conditioning and engine cooling.
All of the MAHLE Group’s non-automotive activities are combined in the Industry business unit which encompasses products from the application areas of filtration, thermal management and large engines for industrial purposes. The Aftermarket business unit serves the independent spare parts market with MAHLE products in OE quality.
MAHLE has a local presence in all major world markets. In 2014, some 64,000 employees at more than 140 production locations are expected to generate sales of around 10 billion euros.
At 10 major research and development centers in Germany, Great Britain, the USA, Brazil, Japan, China and India, more than 4,500 development engineers and technicians are working on forward-looking concepts, products, and systems.