摘要:
An internal combustion engine and method of operating same is provided which includes a plurality of first cylinders and at least one second cylinder. The at least one second cylinder serves as an input cylinder in that a portion of the exhaust gas therefrom is fed by way of an exhaust gas recirculating system to carbureted fuel for the engine. The engine includes an injection system for injecting fuel into the first cylinders and into the at least one second cylinder. The injected fuel quantity of the at least one second cylinder is controlled independently of the injected fuel quantity of the first cylinders.
摘要:
A bypass venturi assembly for recirculating exhaust gas in an internal combustion engine, Particularly suitable for use in an on-road vehicle, is provided with a housing having an outlet, a combustion air inlet and an exhaust gas inlet. A center piece is Positioned within the housing and is in communication with the combustion air inlet. The center piece defines a combustion air bypass section therein. A combustion air bypass valve is positioned in association with the combustion air bypass section. An exhaust gas valve is positioned in association with the exhaust gas inlet. An elbow is coupled with the outlet and defines a fluid flow path. The elbow includes a vane therein which is positioned in association with the flow path.
摘要:
A thermal exchanger to be implemented in the air intake circuit of an internal combustion engine, notably in an intake splitter which includes a hollow plastic body (1) that defines an air intake chamber (2), an entry (3) for air and one or many exits which communicate with the head of the engine. The thermal exchanger constitutes of a chamber (5), at least part of which is in a plastic material, and which features a first opening towards the outside, a second opening (7) that communicates with the intake chamber (2), a third opening (8) that communicates with a canal (9) which supplies coolant fluid, a fourth opening (10) that communicates with a canal (11) which carries the coolant fluid out, a metallic assembly that forms the hot part of the exchanger.
摘要:
A system and method for controlling a multi-cylinder internal combustion engine having at least one automatically controllable airflow actuator and an exhaust gas recirculation (EGR) system including an EGR valve include determining a desired manifold pressure based at least in part on position of the automatically controllable airflow actuator and controlling the EGR valve such that a measured manifold pressure approaches the desired manifold pressure. In one embodiment, the automatically controllable airflow actuators include a charge motion control valve and a variable cam timing device. In other embodiments, the automatically controllable airflow actuators may include variable valve lift devices, variable valve timing devices, or any other device that affects the residual exhaust gases within the cylinders.
摘要:
In the wall portion of a valve housing deposed in connection with an engine block, a cooling-water-taking-out passage that has a cooling water inlet port having an opening on the to-be-connected surface of the valve housing to an engine block, and that takes out the cooling water coming from a cooling water passage of the engine block is integrally formed, and thereby the cooling water inlet port is configured to be connected with the cooling water passage.
摘要:
An internal combustion engine includes a cylinder including at least one intake valve which is selectively open to allow at least air to enter the cylinder and at least one exhaust valve which is selectively open to allow residual gas escape from the cylinder after a firing event. An auto-ignition system for such an engine comprises a device communicably coupled with the cylinder. The device is, effective to allow an amount of high temperature and pressure residual gas to enter the cylinder in the compression stroke of an engine cycle after valve closure of the intake valve.
摘要:
In an EGR valve or an ISC valve used as a control valve assembly for regulating the flow amount of a controlled fluid flowing through an internal combustion engine of an automobile, etc., in order to enable good sliding of a valve shaft to be maintained and, in addition, to achieve stable shaft positioning and holding performance with respect to the linear motion of the valve shaft even when carbon or foreign matter is contained in a controlled fluid, a fluid passage is provided within a housing, a regulating valve for regulating the flow of the controlled fluid flowing though the fluid passage is disposed in the fluid passage, a valve shaft is provided to support the regulating valve, an actuator for opening and closing the regulating valve by actuating the valve shaft is disposed at one end of the valve shaft, a first shaft-bush for supporting the valve shaft so that it slides freely is mounted to the housing on one side of the regulating valve, and an elastic second shaft-bush for supporting the valve shaft so that it slides freely is held on the housing by a holding member on the other side of the regulating valve.
摘要:
A combustion engine having an exhaust-gas driven turbo compressor is provided with a device for recirculating exhaust gases to the engine, this device being connected to the exhaust system of the engine upstream of the turbo compressor and being provided with a cooling device for the recirculated exhaust gases. The engine is provided with at least two exhaust valves per cylinder and has divided exhaust gas flow, each cylinder being connected by a first exhaust valve to a first exhaust collector, which leads to the turbine of the turbo compressor, and each cylinder being connected by a second exhaust valve to a second exhaust collector, which is connected to the exhaust system of the engine downstream of the turbine. The second exhaust collector forms part of the device for recirculating exhaust gases to the engine and is also connected to the inlet of the engine.
摘要:
The exhaust gas recirculation valve device of the present invention is provided with a motor main body 20 which drives a valve 8 by a valve rod 6 in direction of opening or closing, and a motor holder 21 which covers the lower opening of the motor main body 20. A circular groove 50 is formed on one of the upper section of the motor holder 21 and the lower opening of the motor main body 20 and a protrusion 60 which fits into the circular groove 50 is formed on the other of the upper section of the motor holder 21 and the lower opening of the motor main body 20. A liquid sealant layer 70 is disposed between upper face 61 which is the top of the protrusion and the lower face 50a which is the bottom of the circular groove 50 facing the upper face 61.
摘要:
An integrated intake manifold assembly including a first poppet valve assembly disposed at the air inlet to the manifold to regulate air flow into the manifold; a second poppet valve assembly disposed on the manifold to regulate exhaust gas flow into the air intake system; and a bi-directional camshaft with cams for operating simultaneously the manifold vacuum regulating (MVR) valve and the exhaust gas recirculation (EGR) valve. The valve bodies are integrally formed in the wall of the intake manifold. The camshaft is driven by a DC motor and gear train. The cams are arranged on the shaft to provide optimum synchronized opening and closing of the related valves. When used on a diesel engine, the manifold assembly may further include a swirl valve plate disposed between the manifold and the engine head and having a plurality of ganged swirl valves actuated by levers connected to the camshaft for coordinated motion with the MVR and EGR valves. Preferably, the swirl valve plate is also ported as a distribution rail to receive exhaust gas from the single EGR valve and distribute it to the individual cylinders. The valve poppets of the MVR and EGR valves include forked yokes engaging the camshaft to minimize side loading of the valve stems by the cams.