A turbocharger variable geometry turbine of the type which includes nozzle vanes displaceable across the turbine inlet flow path into slots. The vanes have cut-outs which reduce the vane cord and permit peak turbine efficiency over a range of geometries.

Variable geometry turbine

Methods and systems are provided for varying a proportion of compressed air recirculated to a compressor inlet from a location downstream of the compressor and upstream of a charge air cooler and a location downstream of the charge air cooler. A temperature-controlled compressor recirculation flow is used to reduce condensation from EGR being ingested into the compressor. The temperature-controlled compressor recirculation flow is also used to address compressor surge.

Methods and systems for boost control

The device has a moving element arranged in an entry region of a compressor (1) for adjustably covering a portion of a front side outflow surface at an external periphery of a running wheel (5) of the compressor. An entire outflow region is released by adjusting movement of the moving element. The moving element is formed as a cone (3) arranged at an inner wall of a housing (2), where the cone is tapered in a flow direction, and the moving element is partially resilient. An angle (alpha) of the cone is variable in the range of 0 to 45 degrees, where the cone is fillable by medium. An independent claim is also included for a method for stabilizing characteristic diagram of a compressor.

Device for stabilizing characteristic diagram of radial compressor of petrol engine, has moving element arranged in entry region of compressor to adjustably cover portion of front side outflow surface at external periphery of running wheel

A linear actuator system includes a linear actuator and at least one proportional control valve and at least one pump connected to the linear actuator to provide fluid to operate the linear actuator. The at least one pump includes at least one fluid driver having a prime mover and a fluid displacement assembly to be driven by the prime mover such that fluid is transferred from the pump inlet to the pump outlet. The linear actuator system also includes a controller that establishes at least one of a speed and a torque of the at least one prime mover and concurrently establishes an opening of the at least one proportional control valve to adjust at least one of a flow and a pressure in the linear actuator system to an operational set point.

Linear actuator assembly and system

A fluid system includes a variable-speed and/or a variable-torque pump to pump a fluid, at least one proportional control valve assembly, an actuator that is operated by the fluid to control a load, and a controller that establishes a speed and/or torque of the pump and a position of the at least one proportional control valve assembly. The pump includes at least one fluid driver that provides fluid to the actuator, which can be, e.g., a fluid-actuated cylinder, a fluid-driven motor or another type of fluid-driven actuator that controls a load. Each fluid driver includes a prime mover and a fluid displacement assembly. The fluid displacement assembly can be driven by the prime mover such that fluid is transferred from the inlet port to the outlet port of the pump.

System to pump fluid and control thereof

A charging device for an energy conversion device, e.g., a fuel cell, of a motor vehicle, has a rotor rotatably mounted on a housing of the charging device, the rotor having a shaft and at least two compressor wheels which are connected in rotationally fixed fashion to the shaft. The compressor wheels have wheel rear parts facing away from respective compressor wheel inlets, by which a medium that is to be supplied to the energy conversion device, e.g., air, is compressible. The wheel rear parts of the compressor wheels are matched to one another such that respective forces which are opposed to one another and which result from respective compressor wheel outlet forces impressed on the wheel rear parts substantially balance one another.

Charging device for an energy conversion device

The system has a fuel cell with an electrolyte arranged between an anode and a cathode (4). A cathode path (6) includes a cathode gas guide (7) for supplying cathode gas to the cathode, and a cathode exhaust gas guide (8) for discharging cathode exhaust gas. An anode path includes an anode gas guide for supplying anode gas to the anode, and an anode exhaust gas guide for discharging anode exhaust gas from the anode. A compression device (25) for compressing the cathode gas is provided in the cathode gas guide, and selectively bypassed from the cathode gas by a bypass guide (28). The fuel cell is a solid oxide fuel cell. The anode gas is hydrogen. The cathode gas is air. An independent claim is also included for a method for operating a fuel cell system.

Fuel cell system e.g. mobile fuel cell system, for use in commercial vehicle, has compression device for compressing cathode gas, provided in cathode gas guide, and selectively bypassed from cathode gas by bypass guide

The device (4) has a guide vane (10) arranged in a flow channel (5) in an activated condition. The guide vane is movably arranged with respect to a vane length (13) that extends in radial and/or transverse directions in the flow channel relative to a longitudinal middle axis (8) of the flow channel. The guide vane accomplishes a rotating movement around a longitudinal middle axis (18) of the guide vane, where the longitudinal middle axis of the guide vane runs transverse to the longitudinal middle axis of the flow channel.

Swirl producing device for use in exhaust gas turbocharger in internal-combustion engine of motor vehicle, has guide vane movably arranged with respect to vane length that extends in radial and/or transverse directions in flow channel

The blower (1) has rotary pistons (3, 4) rotatably mounted in a housing (2), where the rotary pistons are meshed with each other. The rotary pistons are interconnected via a synchronization gear box, so that the rotary pistons are rotated synchronously with each other. The housing has a slot-like cross section in the region of the rotary pistons. The rotary pistons are provided with a permanent magnet, and the housing is provided with a stator winding. The housing forms two opposite, C-shaped half shells in a region of a conveying channel. An independent claim is also included for a method for operating a rotary piston blower.

Rotary piston blower for use as four-phase electric motor for charging fuel cell system of electric car, has pistons mounted in housing, where pistons are meshed with each other and provided with magnet, and housing is provided with winding

The system has a compressor (5) arranged in a fresh air line (6), where fresh air is discharged from exhaust gas over an exhaust gas line (7). A turbine (4) is provided for driving the compressor. A secondary gas line (10), conveying device (11), another turbine (12), air intercooler (13), cooling devices (14), bypass line and controllable valves are provided to introduce a secondary gas flow, which has a temperature below exhaust gas temperature of the exhaust gas that is diverted from an internal-combustion engine (1) e.g. diesel engine, for cooling the exhaust gas into the line (7). An independent claim is also included for a method for charging an internal-combustion engine.

Vehicle's internal-combustion engine e.g. diesel engine, charging system, has secondary gas line, conveying device, turbine, air intercooler, cooling devices, bypass line and controllable valves provided to introduce secondary gas flow

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