A multiple throttle device 100 includes: a throttle body 12 having a plurality of intake passages 10; a plurality of throttle valves 20; a plurality of secondary passages 102 respectively bypassing the plurality of throttle valves 20; and an air amount adjustment valve 30 for adjusting an amount of air flowing through the plurality of secondary passages 102. The air amount adjustment valve 30 includes a valve plug 40, and a guide part 50 for guiding the valve plug 40 in the axial direction. Opening into the inner peripheral surface 51 of the guide part 50 are: a plurality of first communication holes 52 respectively communicating with downstream sides of the throttle valves 20 in the plurality of intake passages 10; and a second communication hole 54 communicating with a canister 9 for collecting fuel vapor. The actuator 60 adjusts a position of the valve plug 40 in the axial direction such that a first effective opening area of each of the first communication holes 52 which is not blocked by the valve plug 40 and a second effective opening area of the second communication hole 54 which is not blocked by the valve plug 40 change.

Various systems and methods are described for generating vacuum within an engine intake. A system may comprise a throttle body with a slideable throttle body and a throttle fixture with a hollow interior passage located therein.

Systems and methods are provided for managing temperatures associated with a throttle loss recovery system. One exemplary system includes a flow control assembly for recovering energy from a fluid bypassing a flow control valve based on an orientation of the flow control valve, a conduit providing fluid communication with the flow control assembly for the portion of the fluid flow bypassing the flow control valve, and an electronics assembly including an electronics module coupled to the flow control assembly. At least a portion of the electronics assembly is in fluid communication with the portion of the fluid flow bypassing the flow control valve, thereby allowing for heat transfer between the electronics assembly and the fluid bypassing the flow control valve.

The present invention relates to an exhaust-gas heat exchanger for a motor vehicle, having an encircling heat exchanger duct with a bypass pipe situated at the inside, a control flap being provided for conducting an exhaust-gas flow through the heat exchanger duct or through the bypass pipe, said exhaust-gas heat exchanger being characterized in that the control flap has an opening with a pipe stub-like section, the pipe stub-like section being in flow-conducting contact with an inlet opening of the bypass pipe in a bypass position, and the control flap being rotatable from a bypass position into a transfer position, in which the inlet is closed.

Methods and systems are provided for a throttle plate and a vacuum consumption device. In one example, a method may include providing vacuum to a vacuum consumption device with a venturi passage inside a throttle.

Turbine assemblies, loss recovery systems, and related fabrication methods are provided for managing temperatures associated with an electrical generator. One exemplary turbine assembly suitable for use in a loss recovery system includes a wheel configured to rotate in response to a portion of a fluid flow bypassing a flow control valve, a generator including a stator assembly disposed about a rotor coupled to the wheel to rotate in response to rotation of the wheel, a conductive structure in contact with the stator assembly, and an insulating structure radially encompassing the conductive structure and the generator. The conductive structure accesses at least a portion of the fluid flow bypassing the flow control valve and impacting the wheel, thereby providing thermal coupling between the stator assembly and the bypass fluid flow to transfer heat from the stator assembly to the bypass fluid flow via the conductive structure.

A rotary-type throttling device for an internal combustion engine includes an upstream auxiliary intake passageway formed in a throttle body and having an inlet port held in fluid communication with the atmosphere, and a downstream auxiliary intake passageway formed in a cylindrical valve body of a rotary valve and having an outlet port open at a downstream outer circumferential surface of the cylindrical valve body. The upstream auxiliary intake passageway and the downstream auxiliary intake passageway have a body-side joint fluid communication port and a valve-side joint fluid communication port formed in respective sliding surfaces of the throttle body and the cylindrical valve body and designed to overlap each other to keep the upstream and downstream auxiliary intake passageways and in fluid communication with each other. When the rotary valve is open, a main intake air stream passing through an intake passageway in the rotary valve flows smoothly for enhanced intake performance without being disturbed by an auxiliary intake air stream flowing out of the outlet port of an auxiliary intake passage.

Methods and systems are provided for a throttle plate and a vacuum consumption device. In one example, a method may include providing vacuum to a vacuum consumption device with a venturi passage inside a throttle.

A flow measuring device includes a housing including a bypass passage and a flow sensing chip located in the bypass passage and including a sensing surface portion. A throttle portion that is a part of a flowing passage wall facing a sensing surface portion throttles a cross-sectional area of a bypass passage. A position where the throttle portion starts is referred to as a start point position, and a position of the throttle portion where a distance between a gravity center of the sensing surface portion and the throttle portion is shortest is referred to as an end point position. The start point position and the end point position define an imagination line, and the imagination line and the flowing direction define an angle that is in a range from 0 degrees to 20 degrees.

Systems and methods are provided for managing temperatures associated with a flow control assembly, such as a throttle loss recovery assembly. One exemplary method of operating a flow control assembly generating electrical energy in response to a bypass fluid flow influenced by an orientation of a flow control valve involves operating the flow control assembly to deliver the electrical energy to a vehicle electrical system and automatically adjusting operation to increase heat generation at the flow control assembly in response to a temperature condition, such as a potential icing condition or a cold start condition.