Active Purge Pump (APP)
Supports active regeneration of the active carbon canister by flowing evaporated hydro-carbon (HC) gases into the intake manifold. Fuel vapor stored in the activated carbon canister must be purged, typically by utilizing a pressure differential (Δp) between ambient air and the intake manifold. In vehicles where this pressure differential is unavailable, such as turbocharged small engines or when there is insufficient time to perform a purge, as in some hybrid electric vehicles, the APP system facilitates the controlled flush of the active carbon canister.
Highlights
- Hydrocarbon (HC) purging is independent from manifold vacuum
- Fast response time and immediate provision of the optimal purge flow
- Variable pump speed and flow
Advantages
- Small and highly efficient purging pump
- Customized use case due to variable speed and flow
- Depending on system configuration, OEMS may save on additional components
- Individual bracket possible
- System approach allows HC-concentration determination, canister purge flow control and injection correction
Features
- Radial pump with integrated electronics
- Purge flow: 60 slpm @ 8 kPa @ 9.8 V, RT, dry air
- Operating temp.: -40 °C up to 120 °C
- Pressure sensing option
- Brushless DC motor: ~30 W
- Nominal motor speed: 52,000 rpm
- rpm-monitoring