12/2/2023 0 Comments Tpyota diynamic force engine![]() The engines can be fueled by petrol (gasoline) or ethanol and can be combined with electric motors in a hybrid drivetrain. (Ball park numbers - I don't care enough to get real numbers but you get the idea - there is a tiny difference in viscosity between different weight oils at operating temp compared to the viscosity difference between cold and hot oil). The Dynamic Force engines are a family of internal combustion engines developed by Toyota under the brand's Toyota New Global Architecture (TNGA) strategy. THS II for 2.5-liter engines excels in both power and fuel-economy performance due to the synergistic effect of size-reducing, weight-reducing and loss-reducing technologies coupled with the high thermal efficiency and output of a new TNGA-based engine. It makes little sense that the oil pump can pump oil that is 100x more viscous when cold but there is some how a problem at operating temperature when the viscosity difference is 5%. The A25A engine has a combined fuel injection - in the combustion chambers (direct) and in the intake ports (multipoint). New Toyota Hybrid System II for 2.5L Dynamic Force Engine. Now consider the TINY difference that 8, 16, 20, 30, 40, and 50 weight oil represents as far as their differences in viscosity at operating temperature. ![]() The Toyota A25A-FKS is an evolutionary progression of the 3-4 wave engines since its production. Over the course of the oil coming to operating temperature, the oil pump MUST be able to pump the oil sufficiently well to satisfy the lubrication demands of the engine. The Toyota 25A-FKS (2.5 D-4S DVVT-iE) engine is the Dynamic Force’s base engine, with transverse, combined injection, and DVVT-iE. The engine has a new electrical system for variable valve control, a new direct injection system (D-4S) with multi-hole injector and a variably controllable. Think about the oil pump pumping oil at -20F, 0F, 32F, 50F, 100F, 180F, and operating temperature. I've said this several times although this is admittedly outside my wheelhouse and just I'm thinking this through on a Saturday morning drinking my coffee.Īn oil pump in any vehicle has to be able to pump oil effectively over a HUGE viscosity range.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |