Abstract: A tractor has a chassis (10) which supports an engine (4) towards the front thereof. A deflecting shield (8) is positioned to the rear of the engine to deflect sideways hot air which has passed over the engine, and a tank (15) for the storage of urea based fluid for injection into an exhaust system of the engine is located behind the engine to the rear of the deflecting shield. The chassis to the rear of the engine may have an open-topped section (11a) between the engine (4) and a transmission housing (12), the tank being at least partially housed within the open-topped section of the chassis to shield the tank from the hot air which has passed over the engine and from the heating effects of the sun.

Abstract: An exhaust system for an agricultural and/or industrial tractor (10) having an internal combustion engine (11) located in an engine compartment covered by an engine hood (11a). The system includes an exhaust gas treatment unit (16) located inside the engine compartment hood and having a main chamber (18) fed by an inlet pipe (15) which receives exhaust gases from the engine and an outlet pipe (17) which passes treated gases into a final portion (14a,14b) of the exhaust system. The inlet and outlet pipes (15,17) are non-aligned and extending alongside the main chamber (18) in opposite directions to reduce the overall length of the treatment unit. The treatment unit (16) may be installed above the engine (11) with the exhaust gases passing through the unit either generally normal or parallel to the direction of driving (D) of the tractor.

Abstract: A tractor has a chassis (10) which supports an engine (4) towards the front thereof. A deflecting shield (8) is positioned to the rear of the engine to deflect sideways hot air which has passed over the engine, and a tank (15) for the storage of urea based fluid for injection into an exhaust system of the engine is located behind the engine to the rear of the deflecting shield. The chassis to the rear of the engine may have an open-topped section (11a) between the engine (4) and a transmission housing (12), the tank being at least partially housed within the open-topped section of the chassis to shield the tank from the hot air which has passed over the engine and from the heating effects of the sun.

Abstract: An exhaust system for an agricultural and/or industrial tractor (10) having an internal combustion engine (11) located in an engine compartment covered by an engine hood (11a). The system includes an exhaust gas treatment unit (16) located inside the engine compartment hood and having a main chamber (18) fed by an inlet pipe (15) which receives exhaust gases from the engine and an outlet pipe (17) which passes treated gases into a final portion (14a,14b) of the exhaust system. The inlet and outlet pipes (15,17) are non-aligned and extending alongside the main chamber (18) in opposite directions to reduce the overall length of the treatment unit. The treatment unit (16) may be installed above the engine (11) with the exhaust gases passing through the unit either generally normal or parallel to the direction of driving (D) of the tractor.

Abstract: An exhaust system for a vehicle having a cab (53) and an internal combustion engine (1) located in an engine compartment (51). The system includes an exhaust gas treatment unit (9) located outside the engine compartment and having an inlet (9a) which receives exhaust gases from the engine and an outlet (9e) which passes treated gases into a final portion (E) of the exhaust system. The treatment unit (9) is arranged to extend generally vertically with the outlet (9e) generally vertically above the inlet (9a) and adjacent a corner post (52) of the cab of the vehicle to reduce impact on the visibility from the cab. A cage (C) surrounds the exhaust gas treatment unit (9) and has a support means (12) for attachment to a chassis of the vehicle and an outlet (15e) which the outlet (9e) of the treatment unit is connected.

Abstract: The control data stored in an engine control device of an agricultural utility vehicle are stored in a further control device in a redundant manner as reference data. At system initialization and in operation, a comparison is made between the control data and the reference data. If irregular deviations are determined between control data and reference data, then, as a basis for processing of the control signals, instead of the control data, the reference data or a fraction of it is used, or the control data is changed in the engine control device.

Abstract: A drive for a cooling fan at motor vehicles including a main cooling circuit and at least one secondary cooling circuit using a fluid friction clutch including a control element for the drive of the cooling fan is described. In case of a plurality of cooling circuits, such fluid friction clutches do not react as desired by actuating the cooling fan. To prevent this disadvantage, a drive for a cooling fan being drivable by a fluid friction clutch is to be provided, in which the cooling fan starts operation as soon as there is a requirement in at least one of the cooling circuits.

Abstract: An arrangement of radiators (2–6) for a utility vehicle, e.g., an agricultural tractor, comprising three or more cooling radiators which together define a chamber (7), optionally with some of the walls formed by perforated plates instead of radiator elements. One of the radiator elements may be pivotally mounted with respect to the others to provide access to the chamber. The arrangement of radiators may be mounted on a common support (1).

Abstract: A drive for a cooling fan at motor vehicles including a main cooling circuit and at least one secondary cooling circuit using a fluid friction clutch including a control element for the drive of the cooling fan is described.