Operating principle of the ALP

• The ALP supercharger is a membrane pump that is driven by the pressure pulsations inside the exhaust gas system of the engine
• The ALP transforms the exhaust gas pressure energy into a pre-compression of fresh air
• The ALP is connected with the exhaust port of the engine via the bifurcation and impulse tube
• The bifurcation leads the exhaust gas pressure waves to the ALP, whereas the gas volume in the impulse tubing effects the thermal insulation
• The exhaust gas temperature can be hold permanently lower than 80°C inside the ALP by a suitable designed impulse tube
• After occurred energy exchange inside the ALP the exhaust gas flows backwards via the impulse tube to the bifurcation where it passes to the exhaust gas manifold (catalyst), the silencer and finally into the ambiance
• In the fresh air chamber of the ALP each compression shock pushes fresh air into the inlet manifold where it is storaged until the inlet valve opens
• Subsequent fresh air is aspirated from atmosphere when the membrane returns by a spring pre-load
• Reed valves control the fresh gas flow inside the ALP automatically
• The ALP works synchronously to each combustion cycle of the engine
• The ALP is a passive running system that doesn´t need any control mechanism
• An intercooler can be dispensed in almost any applications, because the charging pressures are settled around 1,5 bar absolute