Toyota Corolla Verso 2.2 D-4D

Press Release

D-4D 180: Corolla Verso flagship engine

 

Driving pleasure combined with practical solutions housed in an environmentally friendly vehicle best describe the Toyota Corolla Verso. This fusion has been made possible with the introduction of the ultra-clean, quiet and frugal 177 DIN hp 2.2 D-4D Clean Power with D-CAT engine to the car.

 

This unit is the first true high-power diesel in the C-MPV segment. The engine delivers an impressive 400 Nm of torque at 2,000 rpm, giving the Corolla Verso a sporty yet smooth feel. As well as being practical and safe, this car sprints from 0-100 km/h in just 9.0 seconds, before reaching a top speed of 205 km/h. Surprisingly, fuel consumption has been kept to an absolute minimum of 6.6 L/100km in combined cycle.

 

This is the first time in this segment that piezoelectric technology has been used. As a result, larger volumes of fuel can be injected in a shorter time than was possible with conventional injectors.

 

This in turn leads to greater fuel atomisation and more precise injection timing. Toyota’s piezoelectric common-rail system produces the highest injection pressure (1,800 bar) and the highest number of injections per cycle (5 in total) among systems of this type.

 

At 15.8:1, the unit boasts the segment’s lowest compression ratio. The lower compression ratio means the engine needs less effort to compress the mixture. This in turn results in higher efficiency, better performance and lower fuel consumption.

 

The D-4D 180 has been equipped with the latest Toyota-engineered ceramic glow plugs. Few materials have greater heat-resistance than ceramics. Its ability to withstand much higher temperatures allows the Toyota ceramic glow plug to maintain the same efficiency rates for a much longer period than conventional metallic glow plugs would allow. This is an obvious advantage when it comes to durability. Furthermore, the thermal conductivity of ceramics far exceeds that of metals. Therefore, the ceramic glow plugs are able to reach the ideal temperature quicker than metallic ones. This leads to more rapid cold starts at lower air temperature.

 

Thanks to Toyota D-CAT, the D-4D 180 is the cleanest diesel in its class (for combined NOx and PM emissions). At the heart of the Toyota D-CAT is the Diesel Particulate NOx Reduction system (DPNR). This is another pioneering technology by Toyota. The system uses reduced PM, NOx, HC and CO at the same time.

 

The catalyst features a highly absorbent ceramic filter mounted close to the exhaust manifold. A simple oxidation catalytic converter has been placed further downstream in the exhaust system.

 

D-4D 135 : At the heart of the C-MPV market

 

The 116 DIN hp 2.0 D-4D Toyota Corolla Verso is replaced by a smoother and more powerful 136 DIN hp 2.2 D-4D diesel engine that promises a more complete ride.

 

The D-4D 135 is nippy, accelerating to 100 km/h in a mere 10.0 seconds, a respectable value for a C-MPV segment car. At 2000 rpm, 310 Nm of torque kicks in, ensuring the Corolla Verso (in spite of its family proportions) offers the driver smooth overtaking capacity.

 

The evolved engine offers more power and torque, better performance, and at the same time lower fuel consumption and greener emissions standards. The 136 DIN hp engine lends itself perfectly to this C segment MPV.

New 6-speed manual transmission: Refined, fuel-efficient and compact

 

Both derivatives of the 2.2 D-4D diesel engines in the Corolla Verso range come with Toyota’s new 6-speed manual transmission system which boasts smooth, quick and precise gear­change.

 

A multi-cone synchroniser from first to fourth gears, which requires less force to manoeuvre, has contributed to the sense of smooth and more precise gear-shifting. The gearbox uses a slide ball-bearing in the select lever shaft and fork shaft for high shift efficiency as well as a shift-guide plate to decrease the amount of free play after shift. The re-shaped mass damper also improves shift smoothness.

 

With its exceptionally compact structure, a mere 384 mm in length, it beats all other 6-speed transmissions of identical or even inferior torque capacity. The use of a 3-axis construction has allowed for a 17% reduction in length, compared to the normal 2-axis configuration.

 

Fuel consumption has been reduced by 1%, thanks to the lowest viscosity oil available today for manual transmissions. Adoption of an oil-separator reduces losses, due to the oil agitation.

 

Noise, Vibration and Harshness

 

With the installation of the new 2.2-litre D-4D, the Corolla Verso has received a new NVH package. Improved features include a thicker bonnet insulator, and additional sound-insulation components in the engine compartment. The engine undercover benefits from special absorbent material, as does the fender liner, which profits from absorbing acoustic material. The level of thickness has also been increased on both the floor and tunnel silencers.