JP2006077693A - Structure and method for introducing intake noise of vehicle engine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure and method for introducing intake noise of a vehicle engine, capable of effectively making a passenger hear intake noise, without providing an additional intake noise passage inside a cabin. <P>SOLUTION: An intake port 22a of an intake pipe 22 for introducing air to the vehicle engine 20 and an outside air introducing port 35a of an outside air introducing pipe 35 extended from an air conditioning device 10 are arranged adjacent to each other. Intake noise generated in the intake pipe 22 is introduced from an air outlet 12 of the air conditioning device 10 to inside of the cabin via the outside air introducing pipe 35 and an air passage in the air conditioning device 10. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a structure and method for introducing an intake sound of a vehicle engine into a passenger compartment.

Conventionally, it has been proposed to give a vehicle occupant a sense of acceleration of a vehicle by sound, and an engine intake sound introduction structure that specifically realizes this has been proposed (for example, Patent Document 1). In this conventional engine intake sound introduction structure, intake sound generated in the intake pipe of the engine is introduced into the vehicle compartment from the dash panel through the intake sound introduction passage. With such an engine intake sound introduction structure, the vehicle occupant can experience the acceleration during vehicle acceleration, and at the same time, can obtain a further acceleration feeling of the vehicle by the intake sound introduced into the passenger compartment.
JP 2000-45895 A

  However, if the engine intake sound is simply introduced into the vehicle interior, it is difficult to effectively hear the intake sound to the passengers, particularly the driver seat and passenger seat passengers. For this reason, it is conceivable to separately lay an intake sound passage in the vehicle compartment that can transmit the intake sound introduced from the dash panel to a position where the passenger can effectively hear the intake sound. However, it is difficult to design the intake sound passage separately in the vehicle interior in this way because of the design of the vehicle interior.

  The present invention has been made in view of such circumstances, and has a vehicle engine intake sound introduction structure that can effectively let an occupant hear the intake sound without separately laying an intake sound passage in the vehicle interior. A method is provided.

  The vehicle engine intake sound introduction structure according to the present invention is generated in the intake pipe by disposing an intake port of an intake pipe for introducing air into the vehicle engine and an outside air introduction port of an outside air introduction pipe extending from the air conditioner in close proximity. The intake sound is introduced into the vehicle interior from the air outlet of the air conditioner through the outside air introduction pipe and the air passage in the air conditioner.

  With such a configuration, the intake sound generated in the intake pipe is guided to the air conditioner through the outside air introduction pipe from the outside air inlet close to the intake opening, and the intake sound is further passed from the air outlet through the air passage in the air conditioner. It will be given to the crew. Since the intake sound is output from the air outlet of the air conditioner, the passengers, particularly the passengers in the driver's seat and the passenger seat, can hear the intake sounds effectively.

  In the vehicle engine intake sound introduction structure according to the present invention, a resonator that resonates with a predetermined frequency component of the intake sound is provided in an air passage of the air conditioner, and a passage that guides the intake sound to the resonator is provided. It can be provided.

  With such a configuration, the predetermined frequency component included in the intake sound resonates in the resonator, and the resonance sound of the predetermined frequency generated in the resonator passes through the air passage in the air conditioner device from the air outlet to the occupant. Will be given.

  Further, the vehicle engine intake sound introduction structure according to the present invention may be configured such that an intake sound passage extending from the outside air introduction port toward the air outlet is provided in the air passage of the air conditioner device.

  With such a configuration, the intake sound generated in the intake pipe passes through the intake sound passage provided in the air passage of the air conditioner from the outside air inlet and is given to the occupant from the air outlet of the air conditioner. .

  The vehicle engine intake sound introduction structure according to the present invention may be configured such that the intake sound passage functions as a resonator that resonates with a predetermined frequency component of the intake sound.

  With such a configuration, a predetermined frequency component included in the intake sound passing through the intake sound passage resonates in the intake sound passage, and the resonance sound of the predetermined frequency component generated in the intake sound passage is the outlet of the air conditioner device. Will be given to the crew.

  Furthermore, the vehicle engine intake sound introduction structure according to the present invention may be configured to have an opening / closing means for opening and closing the intake sound passage at a predetermined position in the intake sound passage.

  With such a configuration, it is possible to easily switch the intake sound into and out of the vehicle interior by opening and closing the intake sound passage by the opening and closing means.

  The vehicle engine intake sound introduction method according to the present invention is configured to introduce intake sound generated in an intake pipe for introducing air into a vehicle engine into the vehicle interior from an air outlet of the air conditioner device through an air passage in the air conditioner device. Become.

  According to the vehicle engine intake sound introduction device and method of the present invention, the intake sound generated in the intake pipe is given to the occupant from the air outlet through the air passage in the air conditioner. Even if a passage for transmitting the sound is not separately provided, the occupant can effectively hear the intake sound.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  The vehicle engine intake noise introduction structure according to the first embodiment of the present invention is configured as shown in FIG.

  In FIG. 1, a vehicle compartment and an engine room are partitioned by a dash panel 31, a dash outer silencer 32 is provided on the surface of the dash panel 31 on the engine room side, and a dash inner silencer is provided on the surface of the dash panel 31 on the vehicle compartment side. 33 is provided. In this way, by sandwiching the dash panel 31 between the dash outer silencer 32 and the dash inner silencer 33, noise from the engine room leaking into the vehicle compartment is reduced. The engine 20 is provided with a first intake pipe 21 extending forward of the vehicle and a second intake pipe 22 extending toward the passenger compartment. An opening / closing valve 23 that opens and closes according to the movement of the throttle valve is provided in the second intake pipe 22.

  A cowl panel 34 extending from the dash panel 31 is provided at an upper portion on the front window (not shown) side of the engine room, and the tip end portion of the second intake pipe 22 described above is disposed inside the cowl panel 34. Further, the front end portion of the outside air introduction pipe 35 extending from the air conditioner 10 installed in the passenger compartment is also disposed inside the cowl panel 34, and the outside air introduction port 35a of the outside air introduction pipe 35 and the outside air introduction pipe 35a of the outside air introduction pipe 35 are arranged. Are close to each other.

  In the air conditioner 10, the resonator 14 is provided in the air passage from the outside air introduction pipe 35 to the air outlet 12. The volume of the resonator 14 is designed so as to resonate with a predetermined frequency component of the intake sound generated in the second intake pipe 22. The resonator 14 may be a component of the air conditioner 10 (for example, an air conditioner radiator).

  With such a structure, when the on-off valve 23 is opened according to the movement of the throttle valve that is rapidly opened during vehicle acceleration, the intake sound generated by the air drawn into the second intake pipe 22 from the intake port 22a is introduced into the outside air. The air is introduced from the opening 35 a to the outside air introduction pipe 35, and the intake sound is led to the resonator 14 through the outside air introduction pipe 35. Resonance sound based on the intake sound generated by the resonator 14 is introduced into the vehicle interior from the air outlet 12 through the air passage of the air conditioner 10.

  The air outlet 12 of the air conditioner 10 is usually provided at the center and both sides of the instrument panel in front of the passenger compartment toward the driver's seat and front passenger seat. Therefore, the passengers in the driver's seat and the passenger seat receive the intake sound introduced into the vehicle compartment from the air outlet 12 of the air conditioner 10 from the front, and can hear the intake sound more effectively. As a result, the occupant can obtain a more realistic acceleration feeling of the vehicle by the intake sound.

  In the vehicle engine intake sound introduction structure as described above, the intake sound generated in the intake pipe 22 is guided to the air conditioner device 10 through the outside air introduction tube 35 and is generated in the resonator 14 provided in the air conditioner device 10. Since the resonance sound based on the intake sound is introduced into the vehicle interior from the air outlet 12 through the air passage of the air conditioner 10, a passage for introducing the intake sound into the vehicle interior is separately laid in the vehicle interior. There is no need. As a result, it is not necessary to increase the vehicle manufacturing process in order to guide the intake sound into the vehicle interior, and it is possible to suppress an increase in cost as much as possible.

  When the vehicle is traveling at a constant speed, the throttle valve maintains a substantially constant opening. In accordance with such movement of the throttle valve, the on-off valve 23 maintains a closed state. As a result, the intake sound is not introduced from the outside air introduction port 35a of the outside air introduction pipe 35. Thereby, the intake sound volume can be adjusted so that the intake sound is given to the occupant only when the vehicle is accelerated.

  The vehicle engine intake noise introduction structure according to the second embodiment of the present invention is configured as shown in FIG. In this example, the configuration of the air conditioner 10 is shown in more detail.

  As in the example described above with reference to FIG. 2 (see FIG. 1), the intake port 22a of the second intake pipe 22 and the outside air introduction port 35a of the outside air introduction pipe 35 are arranged close to each other. The outside air introduction pipe 35 is connected to the air passage 100 of the air conditioner 10 through the dash panel 31. In the air passage 100, a blower 102 is provided in a passage from the outside air introduction pipe 35 to the air mix chamber 110, and an evaporator 103, a heater core 104, and an air mix damper 105 are provided in the air mix chamber 110. In addition, an inside air introduction port is formed in the passage continuing from the outside air introduction pipe 35 to the air mix chamber 110, and an inside / outside air switching damper 101 is provided at the inside air introduction port.

  From the air mix chamber 110, ducts leading to a center register 123 (air outlet) formed in the center of the instrument panel, and side registers 121, 122 (air outlet) formed on both sides of the instrument panel The ducts leading to each extend. The air passage 140 has a duct connected to the defroster 124, a duct connected to each foot outlet 125 and 126, and a rear heater duct. These ducts are ducts extending from the air mix chamber 110 to the center register 123 described above. It is connected to a passage that branches off. A cool air bypass passage 115 is provided between the air mix chamber 110 and the duct extending from the air mix chamber 110 to the center register 123.

  The mode switching damper 106 is provided in the downstream opening of the cold air bypass passage 115, the mode switching damper 111 is provided in the duct directed to the defroster 124, the mode switching damper 112 is provided in a common upstream portion of the ducts directed to the foot outlets 125 and 126 and the rear heater duct 124. Each is provided. Further, a cold air bypass damper 109 is provided in the upstream opening of the cold air bypass passage 115, and shut dampers 107 and 108 are provided in the side registers 121 and 122, respectively.

  In such an air conditioner 10, the outside air from the outside air introduction port 35 a corresponding to the open / close state of the inside / outside air switching damper 101 or the inside air from the inside air introduction port is guided to the air mix chamber 110 by the blower 102. In the air mix chamber 110, the cool air passing through the evaporator 103 and the warm air passing through the heater core 104 are mixed according to the opening degree of the air mix damper 105 corresponding to the set temperature, and the temperature is adjusted by mixing the cool air and the warm air. Is sent downstream of the air passage 100. The temperature-adjusted air passes through each duct of the air passage 100, and the center register 123, the side register 121, and the mode register dampers 106, 111, 112 and the shut dampers 107, 108 are opened and closed according to the open / closed state. 122, the defroster 124, and one or more of the foot outlets 125 and 126 are blown into the vehicle interior. When the mode switching damper 106 and the cold air bypass damper 109 are both opened, the cold air passing through the evaporator 103 is forcibly guided to the center register 123, and the cold air is blown out from the center register 123 into the vehicle interior. Further, in a state where air is ejected from the foot outlets 125 and 126, the air is sent to the rear seat side through the rear heater duct 113.

  The air passage 100 in the air conditioner 10 as described above is provided with an intake sound passage 140 continuing from the outside air inlet 35a (see the shaded portion in FIG. 2). The intake sound passage 140 has a passage through the air mix chamber 110 toward the center register 123, a passage toward each of the side registers 121 and 122, and a passage toward the defroster 124. The intake sound passage 140 is a passage surrounded by a thin resin wall, and has an introduction port 140a that opens at the outside air introduction port 35a, as shown in FIG. 10 air passages 100 are disposed along the inner wall. The tip of the passage toward the center register 123, the side registers 121, 122, and the defroster 124 in the intake sound passage 140 may be open or closed. An opening / closing damper 141 that opens and shields the intake sound passage 140 is provided on the upstream side of the intake sound passage 140.

  With such a structure, in the state where the open / close damper 141 opens the intake sound passage 140, the intake sound generated by the air drawn into the second intake pipe 22 from the intake port 22a during acceleration of the vehicle is introduced from the introduction port 140a. 140 and further propagates through the intake sound passage 140 toward the center register 123, the side registers 121 and 122, and the defroster 124. As a result, if the mode switching damper 106 is in a state of opening the center register 123 side, the intake sound propagating through the intake sound passage 140 is introduced from the center register 123 into the vehicle interior, and the shut dampers 107 and 108 can be opened. For example, the intake sound propagating through the intake sound passage 140 is introduced from the side registers 121 and 122 into the vehicle interior. Further, if the mode switching damper 111 is in a state of opening the passage toward the defroster 124, the intake sound propagating through the intake sound passage 140 is introduced from the defroster 124 into the vehicle interior.

  As described above, the passengers in the driver's seat and the passenger seat receive the intake sound introduced from the center register 123, each of the side registers 121, 122 and the defroster 124 from the front, and the intake sound is more effectively received. I can hear you. Therefore, the occupant can obtain a more realistic acceleration feeling of the vehicle by the intake sound.

  In the vehicle engine intake sound introduction structure as described above, the intake sound generated in the intake pipe 22 passes through the intake sound passage 140 provided in the air passage 100 of the air conditioner 10 (the center register 123, each side register). 121 and 122 and the defroster 124) are introduced into the vehicle interior, so there is no need to separately provide a passage for introducing the intake sound into the vehicle interior. As a result, it is not necessary to increase the vehicle manufacturing process in order to guide the intake sound into the vehicle interior, and it is possible to suppress an increase in cost as much as possible.

  In the state where the opening / closing damper 141 closes the intake sound path 140, the intake sound introduced from the introduction port 140a does not propagate toward the center register 123, the side registers 121, 122, and the defroster 124. No intake noise is introduced into the passenger compartment. Thus, the intake volume can be adjusted only when the occupant wants to obtain a sense of acceleration with the intake sound.

  Further, by appropriately designing the volume of the intake sound passage 140 described above, as in the first embodiment (see FIG. 1), the intake sound passage 140 is a resonator that resonates with a predetermined frequency component of the intake sound. It can also function.

  As described above, the vehicle engine intake sound introduction device according to the present invention has the effect that the intake sound can be effectively heard by the occupant without separately laying the intake sound passage in the vehicle interior. It is useful as a structure for introducing the intake sound of the vehicle engine into the passenger compartment.

It is a figure which shows the engine intake sound introduction structure for vehicles which concerns on 1st embodiment of this invention. It is a figure which shows the engine intake sound introduction structure for vehicles which concerns on 2nd embodiment of this invention. It is a figure showing the AA cross section in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Air conditioner apparatus 12 Air outlet 14 Resonator 20 Engine 21 1st inlet pipe 22 2nd inlet pipe 22a Inlet 23 Open / close valve 31 Dash panel 32 Dash outer silencer 33 Dash inner silencer 34 Cowl panel 35 Outside air introduction pipe 35a Outside air inlet 100 Air passage 101 Inside / outside air switching damper 102 Blower 103 Evaporator 104 Heater core 105 Air mix damper 106, 111, 112 Mode switching damper 107, 108 Shut damper 109 Cold air bypass damper 110 Air mix chamber 113 Rear heater duct 115 Cold air bypass passage 121, 122 Side register (air outlet)
123 Center register (Air outlet)
124 Defroster (Air outlet)
125, 126 Foot outlet 140 Intake sound passage 141 Opening / closing damper

Claims (6)

An intake port of an intake pipe for introducing air into a vehicle engine and an outside air introduction port of an outside air introduction pipe extending from an air conditioner device are arranged close to each other, and an intake sound generated in the intake pipe is transmitted to the outside air introduction tube and the air passage in the air conditioner device The vehicle engine intake sound introduction structure is characterized in that it is introduced into the vehicle compartment from the air outlet of the air conditioner. 2. The vehicle engine according to claim 1, further comprising: a resonator that resonates at a predetermined frequency component of the intake sound in an air passage of the air conditioner, and a passage that guides the intake sound to the resonator. Intake sound introduction structure. The vehicle engine intake sound introduction structure according to claim 1, wherein an intake sound passage extending from the outside air introduction port toward the air outlet is provided in an air passage of the air conditioner. 4. The vehicle engine intake sound introduction structure according to claim 3, wherein the intake sound passage functions as a resonator that resonates at a predetermined frequency component of the intake sound. 5. The vehicle engine intake sound introduction structure according to claim 3, further comprising opening / closing means for opening and closing the intake sound passage at a predetermined position in the intake sound passage. A vehicle engine intake sound introduction method, wherein an intake sound generated in an intake pipe for introducing air into a vehicle engine is introduced from an air outlet of the air conditioner through an air passage in the air conditioner into the vehicle interior.

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