![]() A above) contains extremely high pressure fuel and is the channel flowing fuel to each injector. The gear-driven high pressure fuel pump instantly responds to requirements for more or less fuel flow or pressure. Right-hand side of engine contains fuel systemĮvery PowerTech Plus 9.0 L engine uses a common rail to supply fuel pressure to the injectors. Wastegate turbochargers can increase fuel consumption.įuel injection system, single injector control via common rail Unlike many competitive engines, there is not a “wastegate ” used on the 9.0 L engine to control maximum boost pressure. ![]() Think of the ability of the VGT to create boost pressure as a transmission is to load - a 16-speed transmission can respond quickly to more situations than an 8-speed. Boost pressure in the intake manifold is controlled at its optimum point to provide economy and performance regardless of rpm or load. You will find this system to be without turbo “lag” found on some competitive tractor engines. The ability to keep the airflow going at the optimum point provides more consistent engine boost pressure and the ability to respond to load quickly. The opening or closing of the vanes changes the outlet volume and airflow speed against the turbocharger impeller. B) has a mechanical linkage to move the vanes to the appropriate position. The “variable” part of the turbo provides performance by electronically positioning exhaust airflow vanes. This section will describe the key performance and economy components that are visible from the exterior of the engine.įor excellent economy and load response, a Variable Geometry Turbocharger (VGT) is used on all models. These engines deliver proven operation, with countless hours of laboratory and in-field usage to verify it can carry the John Deere name. With the PowerTech Plus 6.8 L engine you can expect superior performance in any application. John Deere research and development has engineered an engine that has met these customer requirements and met stringent emission regulations. Owners of row-crop tractors have high expectations for fuel economy and field performance. ![]() Engine, PowerTech Plus™ 6.8 L external, efficiency, and performance features
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |