Chrysler Powertrain Strategy to Rely Heavily on Integrating Fiat Engine Technology; Chrysler to Be Global Center of Competence for Hybrids and EVs for Fiat and Chrysler
|Chrysler’s new powertrain strategy relies heavily on the rapid integration of Fiat technologies. Click to enlarge.|
Chrysler’s new powertrain strategy is relying on the rapid transfer of Fiat Group technology for Multiair; Gasoline Direct Injection; turbocharging and alternative fuels to support rapid downsizing and improvement of fuel economy, along with the simplification of the company’s engine line-up, according to Paolo E. Ferrero, Senior Vice President, Chrysler Powertrain. Ferrero was speaking during a briefing at Chrysler headquarters today outlining the company’s new five-year business plan.
In addition, Ferrero said, the Chrysler Group will be the global center of engineering competence for hybrids and electric vehicles for Fiat Group and Chrysler Group.
Ferrero, who reports directly to Sergio Marchionne, CEO, Chrysler Group LLC, joined Chrysler Group from Fiat Powertrain Technologies. His most recent position was Vice President – Product Engineering.
In the short to medium term, the internal combustion engine will remain the dominant source of power. Our primary goal is best-in-class fuel economy. In the longer term, as we continue developing solution in electrification and improving the business case and making it attractive for customers, we will expand their applications.—Paolo Ferrero
Diesels. Chrysler will adapt Fiat diesel engines to Chrysler applications. Starting on Euro5-compliant engines, Chrysler will introduce a new generation of common rail with the Multijet2 injector.
The Multijet2 injector uses a new balanced servo valve, and delivers higher accuracy in fuel injection quantity control, resulting in up to 3% lower CO2 emissions and up to 20% lower NOx emissions. Noise and driveability are also improved.
After-treatment technologies will allow the engines to meet 2015 European and US emissions limits, Ferrero said.
|Benefits of Multiair. Click to enlarge.|
Gasoline engines. Chrysler will introduce its next-generation Pentastar V6 in Q2 2010. (Earlier post.) The new V6 family will replace all existing V6 engines from 2.7 to 4.0 liters displacement. First application will be in the Jeep Grand Cherokee in mid 2010.
Chrysler will also progressively apply Fiat technology across its line-up, including the implementation of Multiair, CNG, bi-fuel, tetrafuel, and start & stop technologies.
Multiair is an electro-hydraulic valve-timing system that provides dynamic and direct control of air and combustion, cylinder by cylinder and stroke by stroke. (Earlier post.)
Multiair is variable valve timing on steroids....The real beauty of the system is that it is basically a bolt-on technology. We can add it to a base engine with very little additional investment cost.—Paolo Ferrero
A 1.4L Multiair for the Fiat 500 will be available in Q4 2010, with a turbo version available in Q4 2011. Chrysler will apply Multiair and gasoline direct injection technology to its 4-cylinder world gas engine family. It will also develop a high-performance version of the Pentastar V6, in single and twin turbo versions, also equipped with Multiair. Chrysler will also enhance its V8 efficiency, Ferrero said.
The application of stop & start technology will reduce fuel consumption by 3-5%, Ferrero said. First application will be on a Jeep Wrangler diesel in Q4 2010.
Transmissions. Chrysler will phase-out its existing 4-speed transverse transmission for front-wheel drive, and improve the existing 6-speed, while progressively moving to use the Fiat C635 dual dry clutch transmission.
The DDCT support engine torque up to 350 N·m (260 lb-ft), and will yield a 10% improvement in fuel consumption. First application will be in a D-segment vehicle at the end of 2010.
For longitudinal (rear wheel drive) transmissions, the company is seeking solutions with external partners.
|Broad overview of Chrysler’s planned approach to electrification. Click to enlarge.|
Electrification. Chrysler continues to plan to introduce its two-mode hybrid Dodge RAM 1500 in 2010, followed by the rollout of a PHEV demo fleet support by DOE funding in 2011. Introduction of battery-electric vehicles will follow.
Ferrero said that Chrysler was preparing for a potential shift from regulatory push to consumer demand for plug-in vehicles.