2013 The new Auris Touring Sports DPL: Efficient petrol and diesel powertrains

Complementing the first full hybrid powertrain in the C-segment wagon market, the Auris Touring Sports will be available with the same petrol and diesel engine range as the Auris hatchback a choice of 1.33 litre Dual VVT-i and 1.6 litre Valvematic petrol engines, and improved 1.4 litre and 2.0 litre D-4D diesel engines.

In conjunction with Toyota's Stop & Start technology and an advanced Multidrive S transmission, CO₂ emissions are highly competitive across the entire Auris Touring Sports engine range. The 1.33 and 1.6 litre petrol engines generate 127 and 139 g/km respectively, the 2.0 litre diesel 115 g/km, and the 1.4 litre diesel just 109 g/km.

1.33l Dual VVT-i

Featuring Toyota Stop & Start system, the 1.33 litre petrol engine is equipped with Dual Variable Valve Timing-intelligent (VVT-i) technology and a high compression ratio of 11.5:1, which increases the thermal efficiency of the engine. It generates 73 kW/ 99 DIN hp and maximum torque of 128 Nm at 3,800 rpm.

This excellent dynamic performance is combined with fuel consumption from 5.5 l/100 km and CO₂ emissions from 127 g/km.

The small bore, long stroke unit is exceptionally lightweight and compact, improving the vehicle's power-to-weight ratio. It features a resin-type cylinder head cover and intake manifold, and the intake channel has been streamlined to optimise airflow for improved combustion efficiency.

Dual VVT-i helps boost response levels across the entire rev range by varying the air-fuel intake and exhaust valve timing to suit the conditions at any given time. In addition to improving torque at low and medium engine speeds, the system also reduces emissions and enhances fuel efficiency.

1.6l Valvematic petrol engine

Offering class-leading efficiency, power and torque, Valvematic is a further development of Toyota's highly successful Dual Variable Valve Timing-intelligent (Dual VVT-i) system.

Valvematic takes VVT-i technology a step forward by adding lift and duration control to the inlet valve variable timing. This improves intake airflow volume and speed management -and, subsequently, combustion process management- to deliver more power for less fuel consumption, with reduced CO₂ emissions. The adoption of Valvematic further reduces pumping losses under light engine loads, further lowering fuel consumption.

Valvematic efficiency is further improved through the adoption of a variable length inlet manifold. This acts as an accelerator at low to medium engine speeds, maximising inlet air speed for optimum combustion efficiency.

Available with either a six-speed manual or MultiDrive S automatic transmission, the 1.6-litre Valvematic engine develops 97 kW / 132 DIN hp and a maximum torque of 160 Nm at only 4,400 rpm. When equipped with the manual transmission the unit returns a combined cycle fuel consumption of 6.1 l/100 km and generates CO₂ emissions of only 140 g/km.

MultiDrive S transmission reduces both fuel consumption and emissions, to 6.0 l/100 km and 139 g/km respectively.

1.4l D-4D diesel engine

Mated to a six-speed manual transmission, the 1.4 litre D-4D engine develops 66kW / 90 DIN hp and maximum torque of 205 Nm at only 1,800 to 2,800 rpm.

The 1.4 D-4D 90 turbodiesel unit also features the Stop & Start system as standard and benefits from Toyota Optimal Drive technology, maximising performance and driveability whilst minimising fuel consumption, and CO₂ and particulate emissions.

Engine warm-up time is minimised through the installation of a new coolant by-pass system that helps to reduce heat losses in engine coolant during start-up.

Latest generation piezoelectric injectors control the fuel volume and the timing of the injection more accurately. The high speed reaction time of Piezo injectors makes multi-phase high speed injection possible. This has the effect of both lowering the rate of combustion expansion and effecting a more thorough burn within the combustion chamber, thus further reducing particulate, NO_x and CO₂ emissions.

This, allied to higher common rail injection pressures of 160 Mpa, results in shorter injection times, combining a faster engine response with improved fuel economy and reduced CO₂ emissions.

2.0l D-4D diesel engine

Mated to a six-speed manual transmission, the 91kW/124 DIN hp 2.0 litre D-4D turbodiesel engine has been extensively revised and now features the Stop & Start system as standard.

The unit features a new variable turbocharger with a lower friction bearing system and an electric actuator. CO₂ emission-reducing lubrication and cooling circuit improvements include a 2-stage pressure oil pump with improved oil jet, an optimised water pump with a reduced flow rate, and a twin-chamber oil pan to improve engine warming speeds.

Exhaust emissions are further lowered through a new glow plug control strategy and improvements to the construction and coating of the DPF.

The use of a resin cylinder head cover, oil cooler bracket and water pipe reduce engine weight by 3kg. The reduction of friction through the adoption of a low friction vacuum pump, a low friction timing chain and low viscosity oil further enhance fuel efficiency. And combustion improvement through a new piston bowl shape and the new glow strategy has perceptibly lowered engine NVH.

As a result, the engine is quieter, torque delivery has improved and CO₂ emissions have been lowered to 115 g/km. Fuel consumption has also fallen, to 4.4 l/100km over the combined cycle.

MultiDrive S

Available on the 1.6 Valvematic petrol version of the new Auris Touring Sports, MultiDrive S is a continuously-variable transmission (CVT) with a fully automatic seamless shift mode or a sequential, stepped 7-speed Sport mode.

In automatic mode, the system is optimised for quietness and fuel economy, precisely matching the transmission to the engine at all times by monitoring accelerator pedal angle, vehicle speed and braking force.

In 7-speed sport sequential shiftmatic mode, the step position can be selected by the selector lever or shift paddle switch. In Sport mode, the system is optimised for response and direct engine control.

Sport mode also features precise cornering control. Upon detecting deceleration, the system downshifts and applies engine braking to assist the braking force. On corner exits, predictive downshift logic controls the system to ensure the optimal gear ratio is selected for required level of acceleration.