DATA PD LK..., LP... Product PD Air Compressors. Function. Technical Features

Size: px

Start display at page:

Download "DATA PD LK..., LP... Product PD Air Compressors. Function. Technical Features"

Roderick Conley
5 years ago
Views:

Commercial Vehicle Systems Product Doc. No. Y210611 DATA (EN - Rev.

drive an auxiliary unit, e.g. an oil pump, steering pump or fuel pump. Lubrication and water cooling of the compressor are supplied by the corresponding engine functions.

In general air compressors are designed in close collaboration with engine manufacturers and the compressor chosen has to suit the chosen engine.

Knorr-Bremse air compressors now include an Energy Saving System (ESS) which recycles the compressed air within the compressor during the off-load phase and consequently reduces power

1 Commercial Vehicle Systems Product Doc. No. Y DATA (EN - Rev. 000) Function The are piston-type and are used for generating compressed air to supply the air brake system, air suspension and auxiliary air requirements on agricultural or off-road vehicles. The Compressor range options are: base or mounted belt or gear driven air or water cooled single cylinder or twin cylinder through-drive capability for power transmission from the engine to drive an auxiliary unit, e.g. an oil pump, steering pump or fuel pump. Lubrication and water cooling of the compressor are supplied by the corresponding engine functions. The choice of compressor depends on the total air demand of the vehicle and the available sizes to suit the engine chosen for the vehicle. In general air compressors are designed in close collaboration with engine manufacturers and the compressor chosen has to suit the chosen engine. When the vehicle s air system reaches the desired pressure it has been the traditional practice to let the compressor pump air to atmosphere through an unloader valve, however, many Knorr-Bremse air compressors now include an Energy Saving System (ESS) which recycles the compressed air within the compressor during the off-load phase and consequently reduces power consumption. Technical Features Maximum rated speed: rpm (dependent on model) Maximum working pressure: dependent on the compressor and engine installation Water cooled: Coolant: mix of water and glycol, approx. 50/50 Coolant flow: minimum at idle speed - 2 l/min per cylinder minimum at rpm - 6 l/min per cylinder maximum 10 l/min per cylinder Air inlet: naturally aspirated (not turbocharged), from engine air filter Air Inlet temperature: min -30 C, max +60 C Max. Air Temperature at Delivery Port: normally 220 C Oil temperature: + 85 C +/-5 C Oil type: engine oil (e.g. 15W40) Average duty cycle: max. approx. 40 % 1

2 Product Data Typical Single Cylinder Compressors Type No. Volume [cm 3 ] Cooling Operating Pressure [bar] LK Air 10.0 LK Air 10.0 LK Air 10.0 LK Water 12.0 LK Air 10.0 LK Water 12.5 LK Water 10.0 LK Water 12.0 Max. Rotation Speed [rpm] % Mounting Drive ESS Through Drive Weight approx. [kg] Base Belt No No 7.0 Base Belt No No 7.3 Base Belt No No 8.4 Gear Yes Yes 11.3 Base Belt No No 8.1 Base Belt No No 9.1 Gear Yes Yes 12.1 Gear Yes Yes 13.5 Typical Twin Cylinder Compressors Type No. Volume [cm 3 ] Cooling Operating Pressure [bar] LP Water 12.0 LK Water 12.5 LK Water 12.5 LK Water 12.5 Max. Rotation Speed [rpm] +25% +25% +25% Mounting Drive ESS Side Through Drive Weight approx. [kg] Gear No Yes 18.5 Gear Yes No 23.9 Gear No Yes 30.5 Gear Yes No 24.2 For information on specific Part Numbers and other variants contact Knorr-Bremse. 2

3 Commercial Vehicle Systems Pneumatic Connections Port Used for Connection 0 Air inlet - normally from the engine intake system but may be from a suitable, separate air filter 2 Air delivery to air treatment system Threaded Threaded or d 4 Energy Saving System (ESS) signal from unloader or governor Threaded - in cylinder head 8.1 Oil feed from engine lubrication system 8.2 Oil return to engine crankcase 9.1 Coolant inlet 9.2 Coolant outlet Normally threaded but may be through the compressor mounting Normally through the compressor mounting Threaded 3

4 Product Data Dimensions LK example of 225 cm 3 Compressor 4

5 Commercial Vehicle Systems LK example of 360 cm 3 Compressor LK1802 5

6 Product Data LK example of 360 cm 3 Compressor 6

7 Commercial Vehicle Systems Installation The Air Compressor must be mounted on the engine in accordance with the engine manufacturer s specification. Pipework connecting to the air compressor must be of sufficient size for the air, water and lubricating oil flow. The delivery pipe should run downhill to assist the drainage of condensed water and should have sufficient cooling capability to ensure that the temperature of the air entering the first device in the system meets the specification of that device. Air-cooled compressors require forced air cooling in line with the product specification. It is strongly recommended that all new compressor installations are inspected and approved by a Knorr-Bremse engineer. Servicing are serviceable with a variety of service kits covering the cylinder head, valve plate, gaskets and pistons. For details of the correct service parts use the Product Search link on the website Knorr-BremseCVS.com. 7

8 Product Data Revision Details Rev. 000 New document 8

Hydraulic Fluid: Master Cylinder dia. [mm]

Hydraulic Fluid: Master Cylinder dia. [mm] Commercial Vehicle Systems Product DATA Function This range of Brake Chambers with Master Cylinder is used to apply the service brakes on axles fitted with hydraulic brakes. The chamber applies force to