Toyota News Article

You are here » Home » News » Toyota News » Toyota News Article Print

Search for Used Cars

Search for Used Cars

Search for News

Search for Reviews
Compucars Car Reviews

TWO NEW ENGINES FOR TOYOTA AVENSIS

TWO NEW ENGINES FOR TOYOTA AVENSIS

2.0 D-CAT, the world’s cleanest diesel, and flagship 2.4 Di petrol units to complete the new Avensis range

Key points

2.0-litre D-CAT world’s cleanest diesel engine for NOx and PM emissions
New maintenance-free DPNR four-way catalyst able to reduce NOx and PM levels simultaneously
No fuel additives required
Emissions levels of NOx and PM substantially below Euro IV requirements
No loss in performance: acceleration and maximum speed match that of Avensis
2.0 D-4D
114bhp at 3,600rpm; 280Nm of torque from 2,000 to 2,200rpm
Available in UK in T3-X, T4 and T Spirit saloon models from early 2004
2.4-litre direct injection petrol engine, new flagship engine for Avensis
Most powerful engine yet used in an Avensis model – 161bhp at 5,800rpm and 230Nm of torque at 3,800rpm
0 to 62mph acceleration in 9.1 seconds
Available in UK in T4 and T Spirit saloon and hatchback models from early 2004
2.4-litre Di engine matched to new five-speed sequential multi-mode automatic transmission
Toyota is launching a new era of clean diesel engine performance with the introduction of the Toyota 2.0-litre D-CAT (Diesel Clean Advanced Technology) engine, the world’s cleanest diesel in terms of nitrogen oxides and particulate emissions. At the same time, Toyota is bringing to market a new 2.4-litre Di direct injection petrol unit, the flagship engine of the Avensis range.

The 2.0 D-CAT engine delivers low levels of harmful nitrogen oxides (NOx), hydrocarbon (HC) and particulate (PM) emissions, far below the demands of Euro IV legislation. In this respect, its emissions performance makes it the world’s cleanest diesel engine.

Like the advances in hybrid power technology in the new generation Prius, the introduction of D-CAT demonstrates Toyota’s continuing commitment to engineering vehicle powertrains that have a less harmful impact on the natural environment.

The four-cylinder 2.4 Di engine is the largest capacity direct injection petrol engine in the European D segment and is matched to a new, lightweight five-speed multi-mode automatic transmission. It is the first time Toyota has combined a five-speed automatic with a four-cylinder engine, achieving useful gains in torque from a transmission that is lighter and more compact than the four-speed unit.

NEW LEVELS OF CLEAN DIESEL PERFORMANCE

The Toyota D-CAT system was first shown as a concept in 2000. In early 2004 it will become a production reality with D-CAT making its debut in the new Avensis range and offering new low levels of exhaust emissions for a production diesel engine.

Toyota D-CAT achieves its ground-breaking clean performance through the integration of a series of advanced engine technologies. In creating the engine, Toyota took the existing 2.0-litre D-4D and modified or added 30 key components. The advances made are witnessed by Toyota being granted 1,622 new patents for the development of the system.

At the heart of the D-CAT engine is the DPNR (Diesel Particulate NOx Reduction) four-way catalyst. This marks a world first in achieving continuous and simultaneous filtering of nitrogen oxides and particulate matter in exhaust emissions.

The DPNR catalyst was created by incorporating a particulate filter into the three-way NOx catalyst used in Toyota’s lean-burn petrol engine. Its effective operation relies on the engine management system being able to vary the fuel-air ratio in the exhaust gases. This has been made possible with the addition of a fifth injection nozzle, located in the exhaust port. At a critical moment, fuel is injected downstream of the exhaust manifold to create the right operating conditions in the DPNR catalyst. This ‘rich’ spike allows the DPNR catalyst to release and reduce the NOx it has stored.

The unit is maintenance free (a ‘health check’ is recommended every 20,000 mile