Ford Introduces New Duratec Sci Engine With Unique ‘smart Charge Injection’ - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
Ford Forum Ford Forum

» Auto Insurance
» Featured Product
» Wheel & Tire Center

Go Back   Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > Fordforums Community > Latest Ford News and Racing News > Ford Worldwide News
Register Home Forum Active Topics Photo Gallery Auto Loans Garage Mark Forums Read Auto Escrow

FordForums.com is the premier Ford Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 05-14-2003, 10:59   #1 (permalink)
Mr. Embargo
 
Join Date: May 2001
Location: Embargoland
Posts: 3,745
Ford Introduces New Duratec Sci Engine With Unique ‘smart Charge Injection’

Ford today revealed plans for the production of a new 1.8-litre Duratec SCi engine featuring direct petrol injection for improved fuel economy and lower emissions.

Named for its Smart Charge injection system, the new Ford Duratec SCi engine promises reductions in fuel consumption of between 6 and 8 per cent in real-world driving, along with increased power output and improved refinement. The all-aluminium engine is derived from Ford’s Duratec family of in-line four-cylinder petrol engines that power the Ford Mondeo.

Ford is introducing the new Duratec SCi engine at the 24th International Vienna Engine Symposium (24. Internationales Wiener Motorensymposium 2003, 15-16, May 2003).


Prof Dr Rudolf J Menne, Ford of Europe’s director of engineering for petrol engine development, led the Ford presentation at the Vienna symposium. He commented: “Our belief in developing the first-ever Ford production direct-injection petrol engine was that existing direct injection technologies had yet to deliver fully on their promise. Therefore, our clear focal point was to optimise for improved fuel economy across a much broader range of operating conditions with the new Duratec SCi.”

The new Duratec SCi uses less fuel, especially under low engine speeds or low load conditions, which makes it ideal for improving fuel economy in everyday, real-world driving. Similar to a common-rail direct-injection diesel engine, a direct-injection petrol engine injects fuel directly into the combustion chamber instead of into the intake port.

In order to enhance real-world fuel economy further, the Duratec SCi is combined with the new 6-speed MMT6 gearbox, which offers a higher-ratio top gear. This smart combination of technologies offers excellent performance feel and extremely comfortable and fuel-efficient cruising on highways and motorways.

Direct-injection petrol engines have especially low consumption levels during lean-burn operation, such as occurs in idling or moderate acceleration, when only a part of the combustion chamber is filled with gas-air mixture. Ford engineers, working to extend this benefit over a broader range of loads and engine speeds, developed the engine’s SCi (Smart Charge injection) technology.


“Normal petrol engines are more powerful than they need to be for operating at typical real-world driving conditions,” explained Menne. “Under these load and speed conditions, the engine uses a large proportion of fuel to overcome air resistance in the intake manifold caused by the load control via closing the intake throttle. The engine has to breathe against low pressures in the intake manifold, which causes pumping losses to go up and fuel consumption to increase.”

The Duratec SCi’s fuel injection system offers a smart way to overcome this throttle effect in low load conditions. Using lean-burn stratified smart charge in the combustion chamber, it is able to function almost unthrottled in a wide range of engine speeds and loads, making it much more frugal in its use of fuel.


Through this careful control of the flow of gases entering through the intake ports by swirl control valves, and the precise delivery of fuel into the asymmetric bowls in the piston crowns, SCi places a small, combustible gas-air charge in the combustion chamber so that it is situated near the spark plug at the point of ignition. The surrounding area within the combustion chamber is filled with either non-combustible mix or residual emission gas.


This results in efficient combustion with a reduced amount of fuel while producing enough energy for cruising or moderate acceleration. This extends the benefits of lean-burn operation to about 50 per cent of the engine’s full load capability and 60 per cent of maximum engine speed.

Careful optimisation of this characteristic by Ford engineers has delivered the Duratec SCi’s real-world fuel economy performance. A side benefit of this efficient combustion system is extremely stable idle operation and low overall vibration levels which could set new standards for engines of this size.


The special injection system for Duratec SCi was developed in close cooperation with Robert Bosch GmbH. It features a high-pressure injection pump powered directly by an engine intake camshaft.


The 130-PS, four-valve aluminium Duratec SCi engine features a number of technical differences versus the conventionally fuel-injected, 125-PS 1.8-litre Duratec HE engine. In addition to the swirl-control valve manifold, they include:

· Fuel injection nozzles which operate directly into the combustion chamber rather than into an external intake port.


· Specially designed pistons that feature asymmetric recesses, or bowls, to keep the stratified charge of fuel close to the spark plug. This unique design is critical for achieving ideal combustion efficiency under lean-burn stratified conditions.

· The injection system, similar to that of a diesel common-rail system, achieves fuel pressures up to 120 bar, contributing to the delivery of highly precise injection pulses.


· A complex exhaust catalyst system (EU Stage IV), which includes two three-way catalytic converters plus an additional DeNOx catalytic converter for robust emission control also under stratified lean operation conditions.


· High-energy direct-fire ignition with coil-on-plug technology and four-electrode surface-gap spark plugs, designed especially for efficient stratified combustion.

This new 1.8-litre Duratec SCi engine will make its production debut in the Ford Mondeo later in 2003. Direct petrol injection is another of the key technologies introduced as part of Ford’s commitment to deliver 45 major product actions in the five-year period from 2000.


“Ford’s first production Duratec SCi engine will offer customers an attractive alternative to conventional diesel and petrol powertrains,” Menne said. “It really combines the benefits of both – low fuel consumption and greater comfort combined with responsive power and excellent driveability.”
__________________
*Retired.
RPO83 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > Fordforums Community > Latest Ford News and Racing News > Ford Worldwide News



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
FORD TOUGH: The pressure's on for Bill Ford Jr. to finish first Stacy94PGT Ford Worldwide News 0 06-10-2003 04:52
'Henry had the dream' Stacy94PGT Ford Worldwide News 0 03-28-2003 05:58
A CENTURY OF VISION: Fords built city, changed the world Stacy94PGT Ford Worldwide News 0 03-12-2003 07:17
BA Falcon Engine Reveal RPO83 Ford Worldwide News 0 09-04-2002 07:27
Ford Product-Led Transformation: 2003 RPO83 Trans | Driveline 0 07-22-2002 06:48

Powered by vBadvanced CMPS v3.2.2

All times are GMT -7. The time now is 10:44.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.6.0
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.