EGR cooler
AssigneeFord Global Technologies, LLC
InventorsPaul Nigel Turner, Kevin John Maile, Chris Michael Raines
Life of this patent
Estimating the term…
Abstract
Methods and systems are provided for a cam drive system of an engine. In one example, a front end of an engine includes an idler gear assembly including an idler gear and idler pulley, the idler gear in meshing engagement with a first end of a crankshaft and the idler pulley coupled to and sharing a rotational axis with the idler gear. The front end of the engine may further include first and second camshaft pulleys positioned vertically above the idler gear assembly and a cam drive belt contacting each of the first and second camshaft pulleys and the idler pulley.
Claims20
An exhaust gas recirculation (EGR) system comprising:
- a collection volume of an EGR cooler coupled to an exhaust gas inlet of the EGR cooler;
- the exhaust gas inlet of the EGR cooler coupled to an exhaust gas outlet of an EGR assembly of an engine system;
- inlets of coolant passages of the EGR cooler positioned on flanges connected to an outer circumference of the exhaust gas inlet of the EGR cooler;
- the inlets of the coolant passages of the EGR cooler coupled to coolant outlets of the EGR assembly, and the coolant outlets of the EGR assembly coupled to internal coolant passages of a cylinder head of the engine system;
- and
- an inlet to a bypass passage formed within the exhaust gas inlet of the EGR cooler, and the bypass passage forming a separate exhaust passage through an interior of the EGR cooler.
An exhaust gas recirculation (EGR) cooler comprising:
- a collection volume coupled to an interior of the EGR cooler and a first exhaust gas outlet;
- an exhaust gas inlet to the EGR cooler coupled to an outlet of an EGR assembly of an engine system;
- inlets to coolant passages of the EGR cooler positioned on flanges connected to an outside circumference of the exhaust gas inlet;
- the inlets to the coolant passages of the EGR cooler coupled to internal coolant passages of a cylinder head of the engine system;
- and
- a bypass passage forming a separate exhaust gas passage within the EGR cooler and connecting a bypass passage inlet and a second exhaust gas outlet, the bypass passage inlet separate from the inlet to the collection volume.
An exhaust gas recirculation (EGR) cooler comprising:
- a collection volume coupled to a body of the EGR cooler;
- the collection volume coupled to an exhaust gas outlet of an EGR assembly of an engine system;
- coolant passages with inlets positioned along a perimeter of the collection volume, the coolant passages extending through the body of the EGR cooler;
- the coolant passages coupled to internal coolant passages of a cylinder head of the engine system;
- and
- a bypass passage forming a separate exhaust gas passage through the body of the EGR cooler.
Dependencies are inferred from the claim text.