摘要:
An internal combustion engine (4) comprising: a plurality of cylinders (8); at least one intake manifold (9), which receives fresh air from the outside; a plurality of intake channels (14), each connecting a cylinder (8) to the intake manifold (9); and an intake sound amplification device (26), which is provided with an amplification pipe (27), an insulating element (29) sealing the amplification pipe (27) in a tight manner, a plurality of amplification channels (30), each originating from a corresponding intake channel (14), and an amplification manifold (31), which, on one side, is connected to all amplification channels (30) and, on the other side, is connected to the amplification pipe (27).
摘要:
The invention relates to a sensor for detecting the oxygen content in the intake tract of an internal combustion engine. The sensor comprises a sensor element provided with a measurement electrode, a metal cap surrounding the sensor element, a heat dissipating element connecting a sensor element and a metal cap, and a maintaining element for the sensor element, said maintaining element being embodied as a plastic housing and housing the evaluation electronics for the sensor element. The invention also relates to an internal combustion engine, a sensor of said type being located in the air intake tract between the charge air cooler and the cylinder block.
摘要:
A noise attenuation system for the air induction ducting (10) particularly for an internal combustion engine (12) has an outwardly facing loudspeaker (32) mounted within an air inlet duct (10) so as to lie in the plane of the air intake opening. Signals from an error microphone (40) (and also optionally a detector microphone) are processed in a signal controller (37), the output driver used to drive the loudspeaker (32) so that a cancellation sound field is produced, which attenuates the noise emanating from the air intake. The speaker (32) is mounted on a fairing body (16) creating an annular flow passage (20), a filter element ring (36) inserted in the annular space (20).
摘要:
The air intake system of the vehicle engine includes a flow body that allows for the flow of air through a flow passage to the vehicle engine. A throttle valve disposed inthis passage controls the amount of air flowing to the vehicle engine. To avoid freezing a heating element is provided. The valve is heated by the heating element, which is preferably positioned in proximity to the throttle valve, and in the same housing for a position sensor for the valve.
摘要:
The air intake system of the vehicle engine includes a flow body that allows for the flow of air through a flow passage to the vehicle engine. A throttle valve disposed inthis passage controls the amount of air flowing to the vehicle engine. To avoid freezing a heating element is provided. The valve is heated by the heating element, which is preferably positioned in proximity to the throttle valve, and in the same housing for a position sensor for the valve.
摘要:
Apparatus for attenuating noise generated by an internal combustion engine (10), which comprises an exhaust system (14) and an air intake system (12) including a throttle valve (16) for regulating air flow to the engine; the apparatus comprising a microphone (24) for deriving a noise value (INPUT) representative of the noise generated by the engine; a throttle position sensor (18) for deriving a loading valve (TP) indicative of engine loading; and a controller (26) for modulating the amplitude of the noise value as a function of the engine loading value and for attenuating the noise generated by the engine (10) on the basis of the modulated noise value. The apparatus and method improve the response of the system to abrupt changes in engine loading.
摘要:
A method and a device for calculating a pressure loss of an air cleaner, wherein the air cleaner is disposed upstream of a compressor of a supercharger in an engine provided with a plurality of state quantity sensors, includes the step of calculating an outlet pressure of the compressor by using output values of the state quantity sensors, the step of calculating an inlet pressure of the compressor by using the outlet pressure and a characteristic map of the compressor, wherein the characteristic map shows a relationship between a ratio of the outlet pressure to the inlet pressure and a flow rate of gas flowing in an intake pipe of the engine, and the step of calculating the pressure loss of the air cleaner from the inlet pressure.
摘要:
Method for detecting an air filter condition, in particular for combustion engines, comprising the following steps - (ik) calculation of a linear regression over data-couples values, each comprising pressure drop value (ia) at the air filter and square of air flow value (ib) crossing the air filter, corresponding to said pressure drop value, in order to obtain an angular coefficient (k) of the linear regression, (iki) comparison of the angular coefficient or of the function construed on the angular coefficient with at least one threshold (ThL, Th1, ThH) in order to detect (ikii) an operative condition of the air filter