Collaboration / innovation key to Viper's VENOM: developing a new engine for the now-legendary Dodge Viper included input from renowned engine engineering firms, the development of new electronics, and a whole lot of enthusiasm.When it came time for Chrysler to develop the V10 engine A V10 engine is a V engine with 10 cylinders in two banks of five. Mechanicals The V10 configuration is not an inherently balanced design like a straight-6 or V12. It can be balanced with crankshaft counterweights as an odd firing 90 degree V engine (BMW M5, Dodge Viper). to power the 2008 Dodge Viper The Dodge Viper is a V10-powered sportscar manufactured by the Dodge division of Chrysler Corporation. Production of the two seat supercar began at New Mack Assembly in 1992 and moved to its current home at Conner Avenue Assembly in October 1995. SRT-10, the automaker turned to McLaren Performance Technologies (Livonia, MI; http://www.mclarenperformance.com) and Ricardo Inc. (Van Buren Township may refer to:
dy·na·mom·e·ter n. An instrument for measuring the degree of muscular power. work for the program because we wanted the experts to be our partners." The collaboration produced an engine that is larger, more powerful and, more importantly, cleaner--the engine exceeds Federal tier 2, bin 5 as well as CARB LEV2 emission mandates--than its predecessor. Power was vital. "We realized that if we had taken a step backwards in horsepower nobody would have bought the car," Gladysz said. [ILLUSTRATION OMITTED] Processing for Power The initial internal target was to boost horsepower by 50 from the previous Viper's 500-hp rating. They easily exceeded the goal by pumping 600 horses and 560 lb.-ft. of torque out of this 10-cylinder. How'd they do it? First, they increased the bore by 1 mm, which resulted in a boost in displacement to 8.4-liters from the previous 8.3. The next crucial step was to assure the proper amount of air and fuel entered the combustion chamber Combustion chamber The space at the head end of an internal combustion engine cylinder where most of the combustion takes place. See Combustion , which required a new engine controller, dubbed dub 1 tr.v. dubbed, dub·bing, dubs 1. To tap lightly on the shoulder by way of conferring knighthood. 2. To honor with a new title or description. 3. "VENOM." Developed by Continental AG (www.conti-online.com), the controller is capable of monitoring the crankshaft and cylinder position up to six times during each firing, improving airflow and fuel control dramatically from the previous motor's single data calculation. "Our processor power went up about 10 times thanks to the new processor package. We will know where the crankshaft is at any point in time during the engine's operation which means all of our calculations when it comes to air/fuel mixture will be much more accurate," Gladysz said. The additional computing power was needed also to help manage the variable valve technology (VVT VVT Variable Valve Timing VVT Validation, Verification and Testing VVT Variable Volume & Temperature VVT Variable Voltage Technology Ltd VVT Vivid Virtual Theatre VVT Variable View Table ), which itself was being introduced to the Viper to improve the behavior of the engine at idle and varying speeds. A specially-designed concentric VVT camshaft was developed by Mechadyne International (Oxfordshire, UK; http://www.mechadyne-int.com) and manufactured by Mahle (http://www.mahle.com) complete with two concentric shafts in a single assembly constructed from a solid inner camshaft and outer cam tube. The outer tube is where the exhaust lobes are located, while the inner shaft houses the intake lobes, allowing the valves to adjust based on the requirements of the engine at varying speeds. "The way the old Viper engine was designed it had a lot of internal EGR EGR Engineering EGR Exhaust Gas Recirculation EGR Engineer EGR Early Growth Response EGR Extra Grace Required EGR Enhanced Gas Recovery EGR Embedded GPS Receiver EGR Emergency Generator Room [exhaust gas recirculation “EGR” redirects here. For other uses, see EGR (disambiguation). Exhaust gas recirculation (EGR) is a NOx (nitrogen oxide and nitrogen dioxide) reduction technique used in most gasoline and diesel engines. ] from valve overlap and we discovered the only way to make the big horsepower number and have a smooth idle in the same package was to apply a device that would limit the overlap and allow the engine to run overall very smoothly," said Gladysz, who predicts the Mechadyne concentric camshaft technology will be adopted by other OEMs interested in maintaining the longevity of pushrod push·rod also push rod n. A rod moved by a cam to operate the valves in an internal-combustion engine. engines. [ILLUSTRATION OMITTED] Better Breathing According to according to prep. 1. As stated or indicated by; on the authority of: according to historians. 2. In keeping with: according to instructions. 3. Gladysz, the V10 is the first engine to feature VVT on a high-performance cam-in-block engine, requiring reengineering of the engine's air intake and exhaust modules to better manage power, fuel economy and emission requirements. The air intake manifold Noun 1. intake manifold - a manifold consisting of a pipe to carry fuel to each cylinder in an internal-combustion engine fuel system - equipment in a motor vehicle or aircraft that delivers fuel to the engine combines a cast aluminum lower plenum with smooth runners for better air flow, bolted to a die-cast aluminum upper plenum. A revised air-cleaner box with a low-restriction filter sends air through a dual electronic throttle control--with throttle blades taken from the 4.7-liter V8 debuting in the 2008 Dodge Dakota The Dakota is a mid-size pickup truck from the Chrysler Corporation's Dodge brand. It was introduced in 1987 alongside the redesigned Dodge Ram 50. The Dakota was nominated for the North American Truck of the Year award for 2000. pickup--into the intake module, which better manages the air flow. "With VVT technology you have to really be mindful of the airflow and the only way to do that is to manage it electronically. This is the first time in the corporation's history that we have developed an air low metered engine. We haven't taken this step in the past because there has been a cost associated with it, but we have to do it in order to manage the cam more effectively," Gladysz said. The intake also has a higher capacity over the previous engine, capable of pumping up to 12 liters of air into the engine. Valvetrain Goes on a Diet Chrysler's clean sheet approach to developing the 8.4-liter V10 resulted in a number of other revisions, including new springs, bigger valves, and new chambers on the cylinder heads designed to reduce the amount of fuel that used to sit on the walls of the heads. "We tried to maximize every piece of the equation," Gladysz said. The configuration of the valvetrain was redesigned to reduce weight while improving efficiency at higher rpms through the use of smaller diameter, lighter hydraulic lifters This article has multiple issues: * It may contain original research or unverifiable claims. * Its tone or style may not be appropriate for Wikipedia. ; and fully machined hollow stem intake valves and revised springs designed to work more effectively within the cam profile. The cylinder block is constructed from A356 T6 aluminum with pressed-in-place iron liners, while the piston and rod assemblies are shared with the 6.1-liter V8 HEMI engine For the Hemi engine by Chrysler, see . "Hemi" redirects here. For the prefix hemi-, see the Wiktionary's entry Hemi (from "hemisphere") or "crossflow cylinder head" is a design of internal-combustion engines in which the cylinder head's combustion chamber is of used in several SRT-8 performance vehicles. "One of the other things that was critical was to provide the necessary oil passages to support cam operation effectively," said Gladysz, while pointing out the engine's larger oil pump and revised oil filter--designed to reduce restriction and provide higher differential pressure capability. "The trickery Trickery See also Cunning, Deceit, Humbuggery. Bunsby, Captain Jack trapped into marriage by landlady. [Br. Lit.: Dombey and Son] Camacho cheated of bride after lavish wedding preparations. [Span. Lit. of this whole engine was doing a cam and then controlling the cam effectively with the controller. We have about ten times the code in the controller and managing all that code and the cam are the biggest two technological breakthroughs we tackled," said Gladysz. Powertrains Crucial for Chrysler's Survival Although DaimlerChrysler CEO (1) (Chief Executive Officer) The highest individual in command of an organization. Typically the president of the company, the CEO reports to the Chairman of the Board. Dieter Zetsche's comment about all options being on the table so far as Chrysler Group's future goes, Chrysler is not stopping its investments in new developments. For example, plans call for investing $3-billion in new powertrains--including a family of V6 engines and dual-clutch transmissions--in the coming years. Nearly $2 billion has been allocated for the new "Phoenix" V6 engine family which will be built on a single architecture (rumored to come in four sizes: 3.0, 3.3, 3.6 and 4.0 liters), as opposed to the four architectures currently used. What's more, it will be manufactured at new facilities in Wisconsin, Michigan and Germany and installed in both Chrysler and Mercedes-Benz brand vehicles. While the automaker is mum on the exact timing of the launch of the engine, sources indicate it could be used on the next-generation RT minivans, as well as future LX rear-drive passenger cars and numerous SUVs. On the technology front, Mercedes is likely to get direct-injection for their versions of the engine. Besides the engines, Chrysler is also slated to get a dual-clutch transmission from Getrag loosely based on the Powershift system the supplier developed through a joint venture with Ford. This transmission will be mated to the new Phoenix engine. Also on tap is a new mild hybrid Mild hybrids are essentially conventional vehicles with oversized starter motors, allowing the engine to be turned off whenever the car is coasting, braking, or stopped, yet restart quickly and cleanly. Accessories can continue to run on electrical power while the engine is off. to be developed in conjunction with BMW BMW in full Bayerische Motoren Werke AG German automaker. Founded as an aircraft engine manufacturer in 1916, the company assumed the name Bayerische Motoren Werke and became known for its high-speed motorcycles in the 1920s. , which is already working in conjunction with DaimlerChrysler on the two-mode hybrid system A hybrid system is a dynamic system that exhibits both continuous and discrete dynamic behavior — a system that can both flow (described by a differential equation) and jump (described by a difference equation). slated to hit the market in 2008 Dodge Durango The Dodge Durango is an SUV from Chrysler's Dodge brand. It debuted in the 1998 model year and was redesigned for 2004. It fills the gap in the Dodge lineup since the cancellation of the Dodge Ramcharger in 1993. . Chrysler's reliance on suppliers for development and production of the 8.4-liter V10 encompassed just about every facet of the engine. Here's a list of them: Block Casting--Caparo UK Block Machining--DMI USA Piston and Pin Assembly--Mahle Mexico Piston Ring pack--Condumex Mexico Connecting Rod--Metaldyne USA Cylinder Liners--MAHLE Mexico Crankshaft Assembly--Norton USA Crankshaft Damper--Metaldyne Canada Main Bearings--GVI USA Oil Pan--ECK/DMI USA Engine Oil Cooler--Long USA Oil Level Indicator & TubeAssembly--Milwaukee Wire USA Front Cover/Oil Pump--DMI USA Swinging Oil Pickup Assembly--Extreme USA Timing Drive Kit--Borg Warner USA Engine Wiring Harness--Yazaki USA Intake Module--Extreme USA Fuel Distribution Module--Milleneum USA Exhaust Manifolds--Arvin Meritor Germany Exhaust Manifold Gaskets--Elring Klinger Germany Vacuum Vapor Harness--Bates USA PCV PCV packed-cell volume. PCV packed-cell volume, the volume of packed red cells in milliliters per 100 ml of blood. Valve--MPC USA Cylinder Head Casting--Nemak Mexico Cylinder Head Machining and Assembly--Linamar Canada Valve Seats--Federal Mogul USA Valve Guides--Federal Mogul USA Valve Retainers--Milwaukee Wire USA Valve Locks--Milwaukee Wire USA Valve Spring--Associated USA Push Rods--TI Bundy Intake & Exhaust Valves--Edival Argentina VVT Camshaft--Mahle Germany VVT Camshaft Phaser--INA USA Camshaft Position Senor--Microswitch USA VVT Oil Control Valve--Husco USA Roller Rocker The introduction to this article provides insufficient context for those unfamiliar with the subject matter. Please help [ improve the introduction] to meet Wikipedia's layout standards. You can discuss the issue on the talk page. Arms--INA USA Hydraulic Roller Lifter--Delphi Lifter Alignment Yoke--MidAmerican USA Head Gaskets--Elring Klinger USA Ignition Coils--Diamond USA Head Cover/Coil Cover--Extreme USA Ignition Cables--Prestolite Mexico Platinum Spark Plugs--Champion USA Ignition Capacitor--Diamond USA (Source: Chrysler) kkelly@autofieldguide.com by Kevin M. Kelly SENIOR EDITOR |
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