High pressure pump (HPP)

Plunger for HPP

Hitachi Astemo is leading the field in gasoline direct injection

High Pressure Pumps are used in modern petrol engines with direct injection. Petrol direct injection has the benefits, that a higher torque is achieved with the same cubic capacity. This therefore leads to a higher performance. The engine reacts better to changes of the gas-pedal position. In the partial-load operation, the aim is a measurable amount of fuel saving.

The High Pressure Pump is supplied with fuel from the in-tank pump at a pressure of approx. 6 bar and then boosts the fuel with a pressure up to 500 bar into the common rail.

The pump is positioned directly within the cylinder head, because the drive mechanism is mechanical and not electrical.

Hitachi Astemo currently supplies over 60 high pressure pump SKU's, which match more than 1000 vehicle applications. Models from 2002 to still under production vehicles are covered.

One product, two brands - HÜCO and HITACHI

Since the merger of HÜCO with HITACHI in 2012, the majority out product range have been sold under both brands. However, these products are identical. Both the quality and the prices don't differ - regardless of the brand you choose.

You can find more facts and exciting details about the two renowned brands in the following PDF file. Feel free to take a look and discover similarities and differences between HÜCO and HITACHI!
One product, two brands - HITACHI and HÜCO