23.2.2004
New 1.9 CDTI turbo-diesel engines for Vectra range and Signum

Opel extends the engine program for the Vectra range and the Signum with a new generation of 1.9-liter turbo-diesels. These new CDTI ECOTEC engines, with power outputs of 88 kW (120 hp) and 110 kW (150 hp), underscore Opel's claim to a place among Europe's leading diesel brands.

Opel is extending the engine program for the Vectra range and the Signum with a new generation of 1.9-liter turbo-diesels. These new CDTI ECOTEC engines, with power outputs of 88 kW (120 hp) and 110 kW (150 hp), underscore Opel's claim to a place among Europe's leading diesel brands.

Thanks to its common rail multi-injection system, this new four-cylinder diesel generation is among the leaders in its class, setting new standards when it comes to performance, torque, fuel consumption, emission characteristics and refinement. A newly developed six-speed manual gearbox, which harmonizes with both engines, transmits the drive to the front wheels. All Vectra, Vectra GTS, Vectra station wagon and Signum variants with the 1.9-liter CDTI engines meet Euro 4 emission standards and are available with a maintenance-free diesel particulate filter (DPF) that requires no additives.

1.9 CDTI ECOTEC: High tech power plants with state-of-the-art multi-injection
The all-new 1.9 CDTI ECOTEC generation will also be built in Kaiserslautern, Germany, starting in the Spring of 2005. It will be available in 88 kW (120 hp) und 110 kW (150 hp) versions. Both engines develop maximum torque between 2000 and 2750 rpm. The 120 hp version produces up to 280 Nm, the 150 hp top-of-the-line CDTI develops 315 Nm, allowing excellent driving performance with 0 – 100 km/h acceleration in less than ten seconds and top speeds of up to 217 km/h.

Both these state-of-the-art engines are for the most part identical, each with four cylinders, 1910 cc displacement, a turbocharger with variable turbine geometry and an intercooler. The most notable difference between the two is in the cylinder heads. While the 120 hp engine is equipped with two valves per cylinder, the 150 hp version features four-valve technology. Fuel is supplied to the combustion chambers at pressures of up to 1600 bar. In addition, the multi-injection system optimizes fuel consumption, emissions and refinement. A six-speed manual transmission is standard on both engines.

Opel/GM DPF system: Innovative exhaust gas filter for diesel engines
A maintenance-free diesel particulate filter, which requires no additives and also avoids the other disadvantages of conventional DPF systems, is making its debut in the 1.9 CDTI Signum and Vectra variants. Thanks to an intelligent regeneration strategy, performance, fuel consumption and CO2 emissions remain at levels similar to operation without filter. The after-treatment system, including a pre-catalyst close to the engine and an oxidation-catalyst, is designed to reduce all exhaust emissions, especially hydrocarbons (HC) and carbon monoxide (CO).

The new diesel particulate filter consists of a honeycomb-like, ceramic core made of silicon carbide, which is perforated by microscopic channels. The exhaust gas passes through the channel walls, on which the particulates collect. The particulates must be burned off regularly, to prevent the filter from exceeding backpressure limits. This is achieved via specific injection of fuel, in order to raise the exhaust-temperature to the necessary 600 degrees Celsius. The multi-injection system of the 1.9 CDTI engines provides the necessary flexibility under all conditions, operating not only under full-load, but also when the car is used on short journeys, for example in towns, or as a taxi.