Technical Data
| Engine | X25XE |
|---|---|
| configuration | V6 petrol engine |
| displacement (cc) | 2,498 cc (152.4 cu in) |
| bore (mm) | 81.6 mm (3.213 in) |
| stroke (mm) | 79.6 mm (3.134 in) |
| max power @ rpm | 125 kilowatts (170 PS; 168 bhp) @ 6,000 |
| max torque @ rpm | 227 newton metres (167 lbf·ft) @ 3,200 |
| compression ratio | 10.8:1 |
| engine management | Bosch Motronic M2.8.1 then M2.8.3 in 2000 approx |
| idle speed | 450-1,030 |
| max rpm | 6,600 |
| firing order | 1-2-3-4-5-6 |
| Engine | X30XE |
|---|---|
| configuration | V6 petrol engine |
| displacement (cc) | 2,960 cc (180.6 cu in) |
| bore (mm) | 86 mm (3.386 in) |
| stroke (mm) | 85 mm (3.346 in) |
| max power @ rpm | 155 kilowatts (211 PS; 208 bhp) @ 6,000 |
| max torque @ rpm | 270 newton metres (199 lbf·ft) @ 3,400 |
| compression ratio | 10.8:1 |
| engine management | Bosch Motronic M2.8.1 then M2.8.3 in 2000 approx |
| idle speed | 450-1,030 |
| max rpm | 6,600 |
| firing order | 1-2-3-4-5-6 |
The "X" variant of the engine had the addition of secondary air injection, and EGR to meet later and more stringent emission requirements.
The air injection blew air via a large blower into the exhaust manifolds to ignite un-burnt fuel in the downpipes during the engine warm up phase, in order to get the catalytic converters up to temperature faster. The EGR setup re-cycled exhaust gases (which are in theory inert to the combustion cycle) in order to reduce the production of NOx.
Read more about this topic: X25XE
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