Nissan plans to introduce a 50-state, Tier 2 Bin 5 diesel engine in the United States for use in the Nissan Maxima in 2010. The passenger car will be powered by an all-new Alliance engine co-developed with its partner Renault.
Nissan President and CEO Carlos Ghosn made the announcement during a speech at the US Council on Foreign Relations. Further details about the car, including its launch date, will be announced later.
Nissan is fully engaged in reducing emissions and improving fuel economy and efficiency. Launching a clean diesel engine in the US will offer customers the benefits of fuel economy, CO2 reduction and a satisfying, fun-to-drive performance vehicle that is a hallmark of the Nissan brand. You can expect to see more diesel engines in our product lineup in Europe, Japan, North America and China by fiscal year 2010.—Carlos Ghosn
This initiative is part of Nissan’s plan to reduce CO2 emissions for the future as outlined in Nissan Green Program 2010, the company’s mid-term environmental strategy. (Earlier post.) Nissan will be investing in a variety of technologies including fuel cell cars, hybrid cars, biofuel-based cars, electric vehicles, and improvements in gasoline engines and clean diesels.
Nissan already has diesel engines deployed in Europe, and will soon introduce a new Euro 4-compliant, 2.0-liter diesel engine in Europe for the Qashqai crossover.
The 2.0 dCi is fitted with a Bosch piezoelectric-controlled injection system to develop 148 hp (110 kW) and 320 Nm (236 lb-ft) of torque. The injection system uses a five-squirt injection cycle: two pre-squirts, one main squirt and two post-squirts.
The pre-squirts improve engine acoustics by minimizing the characteristic diesel clatter. The post-squirts sustain the main injection combustion, to burn off soot and thus bring down pollutant emissions before the exhaust gases have left the combustion chamber.
Exhaust gas recirculation (EGR) produces a controlled temperature rise in the combustion chamber to reduce pollutant emission levels (NOx) and thus enhance the engine’s overall environmental performance, ensuring it complies with Euro 4 legislation.
The 2.0 dCi is equipped as standard with a Diesel Particulate Filter (DPF) with a periodic regeneration system. When the particulates that have been collected from the engine emissions reach a specified level, the engine runs a process called thermal regeneration to perform a second post-injection to overheat the exhaust gas. Above a certain temperature, the soot in the filter oxidizes off, and the filter can continue trapping particulates.
Meeting Tier 2 Bin 5 regulations requires an additional 83% reduction in NOx emissions from Euro 4 levels, and a 75% reduction in PM.
The 2.0-liter diesel for the Qashqai has projected fuel consumption of 6.9 l/100km (34 mpg US).