Pioneer in variable engine oil pumps
SHW was the first company to develop variable engine oil pumps and launched them on the market in 2002. Nowadays variable and map-controlled pumps are standard lubrication features of the new generation of car engines. Development work on this type of pump is concentrating on further optimisation of the driver power and improved controllability over the entire temperature range.
Market leader in variable oil/vacuum pumps
Another development area on which SHW is focusing is the integration of functions. For instance, SHW has developed variable oil/vacuum pumps - referred to as tandem pumps - which are integrated as an assembly in the sump of the engine. Starting in 2012 these pumps have been delivered to a leading European automobile manufacturer. SHW the market leader in Europe for functionally integrated pumps.
Strong demand for E-pumps
With regard to automated manual transmissions, dual-clutch and fully automatic transmissions, the trend is clearly towards auxiliary electric transmission oil pumps. These offer substantial savings potential due to their start-stop function and coasting concepts. For the first generation of these pumps, the engine only stopped when the vehicle stopped moving. In extended start-stop systems, the engine is also cut out while the car rolls to a stop, such as before a red light. The start-stop-coasting function turns the engine off as soon as the foot is taken off the gas pedal. Combined with sat-nav systems, further fuel savings are possible when, for example, the engine is automatically turned off upon entering an urban area. This prolongs the time the engine is turned off and lowers fuel consumption.
Electrically driven pumps are also used in the electrified powertrains found in plug-in hybrids (PHEV) or purely electric powertrains (BEV). Depending on the powertrain concept, they are used to change gear and lubricate the transmission as well as to cool and lubricate electric traction motors.
With Lust Hybrid-Technik GmbH, SHW has optimised the depth of its value chain for electric pumps. As a provider of Electronics Manufacturing Services (EMS), Lust Hybrid-Technik covers the entire contract manufacturing chain for electronic assemblies – from the development of processes and circuit board assemblies through to sophisticated test concepts and global shipment.
SHW uses the most advanced simulation techniques from the beginning of the development phase in order to optimise the design. All prototypes are constructed in the in-house prototype department and tested on our own test stands. The test stand comprises fully automated function tests, endurance tests, cold chambers, sound chambers as well as product-specific test equipment that is being constantly refined.