摘要:
A coolant diverter system and method of controlling coolant flow are provided. The coolant diverter system includes a coolant diverter body having a coolant inlet opening, a driveline retarder outlet opening and a bypass outlet opening. The coolant diverter system also includes a valve positioned in the coolant diverter body. The valve is configured in a first valve orientation to fluidly couple the coolant inlet opening to the driveline retarder outlet opening in isolation from the bypass outlet opening. The valve is configured in a second valve orientation to fluidly couple the coolant inlet opening to the driveline retarder outlet opening and the bypass outlet opening. The coolant diverter system also includes a valve controller configured to place the valve in the first valve orientation in response to activation of a driveline retarder coupled to the driveline retarder outlet opening for braking.
摘要:
A cooling system in a vehicle includes a cooling fluid pump (3) that circulates cooling fluid in the cooling system, a cooler (5) for the cooling of the cooling fluid, and a valve (10) to lead cooling fluid to the cooler (5) for cooling or to a return line (13) without cooling. A first circuit (6) includes cooling channels (6a) for the cooling of the combustion engine (1) and a second circuit (17) for the cooling of a hydraulic retarder. The first circuit (6) leads cooling fluid from the cooling fluid pump (3) to a first inlet (10c) at the valve (10). The second circuit (17) leads cooling fluid to a second inlet (10d) at the valve (10). In operating conditions in which the hydraulic retarder is not activated, the valve (10) blocks the second inlet (10d) and thus the circulation of cooling fluid through the second circuit at the same time that it receives cooling fluid from the first circuit (6) through the first inlet (10c).
摘要:
A cooling circuit for a motor vehicle having a cooling medium pump that circulates a cooling medium in the cooling circuit having a hydrodynamic retarder. The cooling circuit further includes a main circuit in which the cooling medium pump and a drive motor of the motor vehicle, as well as a heat exchanger are positioned. A secondary branch of the cooling circuit includes a feed that branches off from the main circuit at a branch-off point and ends in the hydrodynamic retarder, and a return which proceeds from the hydrodynamic retarder and ends at a junction location in the main circuit. The return ends upstream of the branch-off location of the feed as viewed in a flow direction of the cooling medium in the main circuit, however on the same side of the cooling medium pump or at the branch-off location of the feed in the main circuit.
摘要:
Systems and methods for providing an improved strategy for controlling a variable speed water pump in a vehicle. In some embodiments, more than one water pump speed function is calculated based on values obtained from vehicle sensors, and a controller chooses among the water pump speed function results to set a water pump speed. In some embodiments, the water pump speed is increased when driveline torque is greater than a threshold amount for an amount of time that varies based on the driveline torque. In some embodiments, ambient temperature is considered while determining whether the water pump should provide full coolant flow to an auxiliary coolant loop of a trailer.
摘要:
A cooling arrangement for an internal combustion engine is described, with a coolant balancing tank which is capable of being filled with coolant and the inlet side of which is connected via a first venting line to an internal combustion engine and/or via a second venting line to a cooler for cooling the coolant, and the outlet side of which is connected via a coolant return line to the inlet side of a pumping device for pumping the coolant through the internal combustion engine. The cooling arrangement has, furthermore, a flow control unit for variably limiting the coolant volume flow in the venting line.
摘要:
A method to operate a vehicle equipped with an electronic controlled internal combustion engine. The engine fan is used as a dynamic fan brake when the vehicle exceeds a minimum predetermined operating parameter for a predetermined period of time, and is disabled once the vehicle is operating within predetermined operating parameters.
摘要:
A cooling system for an internal combustion engine mounted in a vehicle includes a first flow circuit with a pump for circulating coolant via ducts in the cylinder block of the engine and a radiator. The first flow circuit is separated from atmospheric pressure. The cooling system also includes a second flow circuit which is provided with a coolant reservoir with a normal pressure which is lower than the pressure in the first flow circuit, and a pump for circulating coolant via a pipeline between units with a cooling requirement and a second radiator. The second flow circuit is connected to the first flow circuit via a one-way valve opening in the direction of the first flow circuit.
摘要:
A system and method for monitoring engine operating data include monitoring various engine operating parameters and periodically storing engine data when corresponding criteria are met. In one embodiment, engine operating parameters may include engine speed, powertrain demand, or a fluid temperature, for example. Engine operating data such as oil pressure, turbo boost pressure, battery voltage, fuel economy, oil temperature, coolant temperature, maximum RPM, maximum vehicle speed, and throttle position sensor voltage, for example may be stored for trending and analysis. In addition, engine components may be monitored to determine service or replacement.
摘要:
The invention relates to a method and a device for increasing the use of the braking moment of a retarder in an automobile. According to this method, the heat produced by the retarder during braking is dissipated using a coolant. The method is characterized in that at least one auxiliary consumer and/or at least one of the following devices of the cooling system—a connected fan, a connected thermostat, a coolant pump, a bypass-valve—is controlled in dependence on the mode of the operation of the retarder.