1 June 2023 What is HDi, e-HDi, BlueHDi? Engine performance characteristics
HDi (High Pressure Direct Injection) is a diesel engine designed by the PSA Peugeot Citroen group provided with the common rail direct fuel injection system.
The first generation HDi engines were launched in 1998. All the engines of this range had 4 cylinders and complied with Euro 4 eco standards, that controls emission of pollutants in exhaust gas.
The second generation was unveiled in 2003. There was a V-shaped engine among the 4-cylinder straight ones. The HDi 2.7 204 hp power unit was remarkable not only for the cylinder position but also for their number, the engine had 6 cylinders. All the second generation engines were compliant with Euro 4 standards.
The production of the third generation HDi engines started in 2009. These power units complied with Euro 5 emission standards. This range included two V-shaped 6-cylinder engines: HDi 3.0 245 hp and HDi 3.0 275 hp beside the straight 4-cylinder ones.
In 2010 the PSA Peugeot Citroën engineers came up with the e-HDi engine that had a cutting edge “start-stop” system. This solution significantly reduced fuel consumption.
The manufacture of the fourth generation common rail diesel engines started in 2013. They complied with Euro 6 high eco standard and were named BlueHDi. All the engines of this generation had 4 cylinders.
