An engine gas valve with a valve housing manifold with at least one flow passage and an annular clutch body arranged within the valve housing manifold. A drive shaft is arranged such that at least a portion of the drive shaft is positioned concentrically within the clutch body. A first valve element is supported on the drive shaft to rotate with the drive shaft within the at least one flow passage and a second valve element supported on the clutch body within the at least one flow passage. An actuator is coupled to the drive shaft to pivot the drive shaft between a first state in which the first and second valve elements are closed, a second state in which the first valve element is open and the second valve element is closed, and a third state in which the first and second valve elements are open.

A valve flap assembly for an exhaust-gas valve has a first valve flap provided for closing a first flow cross-section and a second valve flap provided for closing a second flow cross-section. The second valve flap is mounted for swiveling movement relative to the first valve flap. In addition, a valve arrangement for an exhaust system is presented which comprises such a valve flap assembly. Furthermore, an exhaust system for an internal combustion engine of a vehicle is presented, which comprises such a valve flap assembly and/or a valve arrangement. A vehicle having such an exhaust system is also disclosed.

An actuator 1 includes a housing 2, an output shaft 3 projecting from the inside of the housing 2 to the outside, a motor 4 provided in the housing 2, a reduction mechanism 5 which connects the motor 4 to the output shaft 3, a magnet 61 provided for rotation integrally with the output shaft 3 inside the housing 2, a Hall effect IC 62 disposed to face the magnet 61 outside the rotation locus of the magnet 61, and a circumferential wall 25 disposed to stand from the inner wall of the housing 2 and interposed between the magnet 61 and the Hall effect IC 62.

An actuator 1 includes a housing 2, an output shaft 3 projecting from the inside of the housing 2 to the outside, a motor 4 provided in the housing 2, a reduction mechanism 5 which connects the motor 4 to the output shaft 3, a magnet 61 provided for rotation integrally with the output shaft 3 inside the housing 2, a Hall effect IC 62 disposed to face the magnet 61 outside the rotation locus of the magnet 61, and a circumferential wall 25 disposed to stand from the inner wall of the housing 2 and interposed between the magnet 61 and the Hall effect IC 62.

Systems and methods for operating a powertrain or driveline that includes an engine and a belt integrated starter/generator are described. In one example, the belt integrated starter/generator is used to start an engine unless vehicle operating conditions indicate that the belt integrated starter/generator may be having difficulty starting the engine.

Valve assemblies with clutches adapted for dual valve member actuation. A valve assembly includes a valve body that includes a first portion and a second portion, a bore, a primary opening, and a secondary opening. A primary valve shaft is disposed within the bore and has a primary end portion, the secondary valve shaft is disposed within the bore and has a secondary end portion facing the primary end portion of the primary valve shaft. A primary valve member is movable relative to the primary opening and coupled to the primary valve shaft, the secondary valve member is movable relative to the secondary opening and coupled to the secondary valve shaft. A clutch is shiftable between a first position enabling the primary valve shaft to move independently of the secondary valve shaft and a second position enabling the secondary valve shaft to move with the primary valve shaft.

A control system for a compression-ignition engine is provided, which includes an engine configured to combust a mixture gas inside a combustion chamber by compression ignition, a fuel injector attached to the engine, a state function adjusting part attached to the engine and configured to adjust at least introduction of fresh air into the combustion chamber, a three-way catalyst provided in an exhaust passage of the engine, a wall temperature acquiring part configured to acquire a parameter related to a temperature of a wall of the combustion chamber, and a controller. A swirl flow is generated inside the combustion chamber to circle along the wall. When the wall temperature of the combustion chamber is below a given wall temperature, the controller sets an air-fuel ratio of the mixture gas substantially to a stoichiometric air-fuel ratio so as to remain within a purification window of the three-way catalyst.

The present invention relates to an exhaust gas heat exchanger capable of controlling the cooling performance. The exhaust gas heat exchanger includes: a cooler through which cooling water flows and in which a plurality of gas tubes is provided to allow exhaust gas to flow; an intake and exhaust block including an intake part, a supply line, a discharge line, a bypass line, and a first flap; a U-turn block including an inflow part, a re-cooling line, a release line, and a second flap; and an air duct.

An engine 1 includes an exhaust manifold, an intake manifold, and an EGR device configured to supply EGR gas from the exhaust manifold to the intake manifold. An upper end of the EGR cooler extended downward is attached to a downwardly extending attachment part provided to the exhaust manifold.

An exhaust gas recirculation heat exchanger assembly that includes a tube, a fin structure, and a clip. The tube has first and second walls extending between a first lateral end and a second lateral end. The fin structure is received in the tube to form a cooling tube assembly. The cooling tube assembly defines a first channel between the first lateral end and a first fin of the fin structure, a second channel between the second lateral end and a second fin of the fin structure disposed opposite the first fin, and a plurality of intermediate channels extending between the first and second channels. The clip is coupled to the cooling tube assembly. The clip has at least one flow impeding portion being configured to impede a fluid flow through at least one of the first channel, the second channel, and one or more of the intermediate channels.