Frequently Asked Questions

Euro 4 is valid from October 1st 2005 for newly homologated vehicles and from October 1st 2006 for all newly registered vehicles. Euro 5 will become effective for newly homologated vehicles from October 1st 2008 and newly registered vehicles from October 1st 2009.

In the PM-KAT filter particulates are separated by the deliberate creation of turbulence when the exhaust gas is redirected into the separator and by the passage through the sintered metal fleece. The disintegration of the particulates deposited in the fleece is the result of a permanent chemical reaction which is brought about with the aid of the NO₂ in the oxidation catalyst.

No, the PM-KAT is a maintenance free unit which has been designed to last the life of the engine.

A small percentage of the exhaust gas is recirculated externally and cooled, this cooled mixture is then fed back into the combustion chamber, this process cuts the share of nitrogen oxide in the exhaust gas. The lower levels of particulate matter required by Euro 4 legislation are reduced by means of the patented MAN PM-KAT filter.

No, the EGR system does not require the addition of any chemicals to achieve Euro 4 emissions.

No the EGR system does not add any significant weight to the chassis, unlike the SCR system which adds around 150kgs.

A major advantage of the EGR system is that it does not take up any valuable chassis space, this is particularly important for operators who need to mount ancillary equipment onto the chassis. By contrast the SCR system requires a considerable amount of space on the chassis to mount the AdBlue tank, and all the associated SCR components.

Our own back to back performance tests have concluded that there is minimal difference in fuel economy between Euro 3 and Euro 4, and remember, the D20 Euro 3 engine has already established itself as one of the most fuel efficient engines available. A D20 powered TGA 6x2 tractor was the first 44t truck to break the 8.00mpg barrier around the arduous Commercial Motor test route and our D20 powered 8x4 recently became the first tipper to break the 9.00mpg barrier around the Commercial Motor tipper route.

EGR is proven technology and has been used successfully by MAN since the introduction of Euro 3 emissions legislation in 2000.

Again another myth, MAN offers Euro 4 EGR technology throughout the whole model range from 7.5t to 44t gross weights from 140hp up to 480hp.

With the EGR with PM-KAT filter MAN have brought a unique solution for cleaning exhaust gas with the particulate filter onto the market which has already convinced numerous customers. This has been born out by its great success and the convincing advantages of this engineering. MAN is now also developing an EGR PM-KAT solution for Euro 5 which will be available well before the Euro 5 legislation comes into effect.