JP2019156318A

JP2019156318A - vehicle

Info

Publication number: JP2019156318A
Application number: JP2018048893A
Authority: JP
Inventors: 碧梅木; Midori Umeki; 直人仲西; Naoto Nakanishi; 辻田　俊哉; Toshiya Tsujita; 俊哉辻田
Original assignee: Daihatsu Motor Co Ltd
Current assignee: Daihatsu Motor Co Ltd
Priority date: 2018-03-16
Filing date: 2018-03-16
Publication date: 2019-09-19

Abstract

To cool an oil pan actively.SOLUTION: An oil pan 14p is arranged under a floor, and is covered from a lower side by a plate-state under cover 22. On a principal plane of the under cover 22, a position which is a front side of the oil pan 14p has an opening OP1 having a front edge part 22p protruded downward, a rear end of the under cover 22 has a bent part 22b which becomes in an up-grade state as advances rearward. A tire carrier 26 is arranged at a tip of the up-grade formed by the bent part 22b, and blocks a rear visual field in a front view.SELECTED DRAWING: Figure 1

Description

この発明は、車両に関し、特に、床下に配された冷却対象物と、冷却対象物を下方から覆う板状のカバー部材とを備える、車両に関する。 The present invention relates to a vehicle, and more particularly, to a vehicle including a cooling object disposed under a floor and a plate-like cover member that covers the cooling object from below.

この種の車両の一例が、特許文献１および特許文献２に開示されている。このうち、特許文献１によれば、アンダーカバーは、床下にエンジンが配置された車両において、車両前方側からエンジンの下方に至る領域に配置される。アンダーカバーは、車両幅方向の両端側に開口した側方開口部と、当該側方開口部よりも車両後方側であって、エンジンに対して車両前方側の位置に設けられた導風部とを有する。導風部は、車両後方に向かうに連れて上り勾配となる形状に形成されている。これよって、床下にエンジンが配置された車両において、エンジンを下部のみでなく全体に亘って冷却することができる。 An example of this type of vehicle is disclosed in Patent Literature 1 and Patent Literature 2. Among these, according to Patent Document 1, in the vehicle in which the engine is disposed under the floor, the under cover is disposed in a region extending from the vehicle front side to the engine lower side. The under cover includes a side opening that is open at both ends in the vehicle width direction, and a wind guide portion that is provided on the vehicle rear side of the side opening and at a position on the vehicle front side with respect to the engine. Have The wind guide portion is formed in a shape that becomes an upward slope as it goes rearward of the vehicle. As a result, in the vehicle in which the engine is arranged under the floor, the engine can be cooled not only in the lower part but also in the whole.

また、特許文献２によれば、車両ボデーの下側に組み付けられるエンジンアンダーカバーには、組み付け状態において、車両ボデーに走行エアが作用すると、エンジンルーム内に滞留している熱を帯びたエアを抜き可能に負圧領域を形成する縦壁が、エンジンより後方側に形成されている。これによって、エンジンルーム内の熱害を抑制することができる。 Further, according to Patent Document 2, when the traveling air acts on the vehicle body in the assembled state, the engine-under cover assembled on the lower side of the vehicle body is exposed to the heat-generated air remaining in the engine room. A vertical wall that forms a negative pressure region so that it can be pulled out is formed on the rear side of the engine. Thereby, the heat damage in an engine room can be suppressed.

特開２０１３−１８０６０９号公報JP 2013-180609 A 特開２０１４−５８１７８号公報JP 2014-58178 A

特許文献１の構造では、側方開口部よりも後方の対象物が冷却されるだけで、側方開口部よりも前方の対象物が十分に冷却されず、熱害のおそれがある。また、特許文献２の構造では、グリル等の車両前面の開口から取り込んだ空気を排出することを前提としており、キャブオーバ車のように冷却したいエンジン等の前方にフロアメンバ等の車両構造物がある場合は、負圧領域が形成されても期待した排出効果が得られず、熱がこもり、熱害のおそれがある。 In the structure of Patent Document 1, only the object behind the side opening is cooled, and the object ahead of the side opening is not sufficiently cooled, which may cause heat damage. The structure of Patent Document 2 is based on the premise that air taken in from an opening in the front of the vehicle such as a grill is exhausted, and there is a vehicle structure such as a floor member in front of the engine or the like to be cooled like a cab-over vehicle. In such a case, even if a negative pressure region is formed, the expected discharge effect cannot be obtained, and heat builds up and there is a risk of heat damage.

それゆえに、この発明の主たる目的は、前方から走行風を取り込みづらい形状の車体であっても、冷却対象物を積極的に冷却することができる、車両を提供することである。 Therefore, a main object of the present invention is to provide a vehicle capable of actively cooling an object to be cooled even in a vehicle body having a shape in which it is difficult to capture traveling wind from the front.

この発明に係る車両は、床下に配された冷却対象物と、冷却対象物を下方から覆う板状のカバー部材とを備え、カバー部材の主面のうち冷却対象物よりも前方の位置には下方に突出した前縁部を有する開口が形成され、カバー部材の後端には後方に向かうにつれて上り勾配となる曲げ部が形成され、曲げ部がなす上り勾配の先に配され、前面視で後方の視界を遮る遮蔽部材をさらに備える。 The vehicle according to the present invention includes an object to be cooled arranged under the floor and a plate-like cover member that covers the object to be cooled from below, at a position ahead of the object to be cooled on the main surface of the cover member. An opening having a front edge protruding downward is formed, and a bent portion having an upward slope is formed at the rear end of the cover member toward the rear, and is disposed at the tip of the upward slope formed by the bent portion. A shielding member that blocks the rear view is further provided.

カバー部材の後端には後方に向かうにつれて上り勾配となる曲げ部が形成され、遮蔽部材は当該曲げ部がなす上り勾配の先に配される。このため、カバー部材の下側を流れる走行風は、カバー部材の後端に達した後、遮蔽部材によって前方に返される。また、カバー部材に形成された開口の前縁部は下方に突出するため、前縁部の後方には負圧が発生する。この結果、遮蔽部材によって返された風は、冷却対象物の後部および底部を経て開口から排出される。これによって、前方から走行風を取り込みづらい形状の車体であっても、冷却対象物を積極的な冷却することができる。 A bent portion having an upward slope as it goes rearward is formed at the rear end of the cover member, and the shielding member is disposed at the tip of the upward slope formed by the bent portion. For this reason, the traveling wind flowing under the cover member reaches the rear end of the cover member and is then returned to the front by the shielding member. Moreover, since the front edge part of the opening formed in the cover member protrudes below, a negative pressure is generated behind the front edge part. As a result, the wind returned by the shielding member is exhausted from the opening through the rear and bottom of the object to be cooled. As a result, the object to be cooled can be positively cooled even if the vehicle body has a shape in which it is difficult to capture the traveling wind from the front.

この発明の上述の目的，その他の目的，特徴および利点は、図面を参照して行う以下の実施例の詳細な説明から一層明らかとなろう。 The above object, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

この実施例の車両を側面視した状態を示す図解図である。It is an illustration figure which shows the state which looked at the vehicle of this Example from the side. この実施例の車両のエンジン周りを前面視した状態を示す図解図である。It is an illustration figure which shows the state which looked at the engine periphery of the vehicle of this Example by front view.

図１および図２を参照して、この実施例の車両１０は、キャブオーバ車のように、前方から走行風を取り込みづらい車体形状を有する車両であり、サービスホールカバー１８が設けられたボデー２０を備える。エンジン（パワーユニット）１４はサービスホールカバー１８の下方（つまり床下）に配され、ラジエータ１２はエンジン１４の前方に配される。 Referring to FIGS. 1 and 2, a vehicle 10 of this embodiment is a vehicle having a vehicle body shape in which traveling wind is difficult to be taken from the front, such as a cab-over vehicle, and includes a body 20 provided with a service hole cover 18. Prepare. The engine (power unit) 14 is disposed below the service hole cover 18 (that is, below the floor), and the radiator 12 is disposed in front of the engine 14.

エンジン１４は冷却対象物としてオイルパン１４ｐを有し、オイルパン１４ｐの前方には車両構造物１６が配される。ラジエータ１２の後方からエンジン１４を前面視すると、オイルパン１４ｐの少なくとも一部は、構造物（トランスミッション，フロアメンバなど）１６によって隠れる。したがって、オイルパン１４ｐへの前方からの風当たりは、構造物１６によって妨害される。 The engine 14 has an oil pan 14p as an object to be cooled, and a vehicle structure 16 is disposed in front of the oil pan 14p. When the engine 14 is viewed from the rear side of the radiator 12, at least a part of the oil pan 14 p is hidden by the structure (transmission, floor member, etc.) 16. Therefore, the wind blow from the front to the oil pan 14 p is obstructed by the structure 16.

エンジン１４はまた、板状のアンダーカバー２２によって下方から覆われる。このとき、オイルパン１４ｐとアンダーカバー２２の上面との間には、隙間が形成される。アンダーカバー２２の主面のうち、エンジン１４の下方でかつオイルパン１４ｐよりも前方の位置には、下方に羽根状に突出した前縁部２２ｐを有する開口ＯＰ１が形成される。また、アンダーカバー２２の後端には、後方に向かうにつれて上り勾配となる曲げ部２２ｂが形成される。曲げ部２２ｂがなす上り勾配の先（曲げ部２２ｂの近傍でかつ上り勾配の延長線上）には、スペアタイヤ２４を積載するためのタイヤキャリア２６が遮蔽部材として配される。したがって、オイルパン１４ｐよりも後方の視界は、タイヤキャリア２６によって遮られる。 The engine 14 is also covered from below by a plate-like undercover 22. At this time, a gap is formed between the oil pan 14 p and the upper surface of the under cover 22. In the main surface of the under cover 22, an opening OP1 having a front edge portion 22p protruding downward in a blade shape is formed at a position below the engine 14 and ahead of the oil pan 14p. In addition, a bent portion 22b is formed at the rear end of the undercover 22 so as to be inclined upward toward the rear. A tire carrier 26 for loading the spare tire 24 is disposed as a shielding member at the tip of the upward slope formed by the bent portion 22b (in the vicinity of the bent portion 22b and on the extended line of the upward slope). Therefore, the field of view behind the oil pan 14p is blocked by the tire carrier 26.

なお、タイヤキャリア２６の前面には、走行風を前方へ返すべく湾曲した返し部２６ｂが一体形成される。返し部２６ｂは、タイヤキャリア２６の強度の向上にも貢献する。 A return portion 26b that is curved to return the traveling wind forward is integrally formed on the front surface of the tire carrier 26. The return part 26b also contributes to an improvement in the strength of the tire carrier 26.

このように、アンダーカバー２２の後端には後方に向かうにつれて上り勾配となる曲げ部２２ｂが形成され、タイヤキャリア２６は当該曲げ部２２がなす上り勾配の先に配される。したがって、アンダーカバー２２の下側を流れる走行風は、アンダーカバー２２の後端で上後方に巻き上げられ、タイヤキャリア２６の返し部２６ｂによって前方に返される。 In this way, the rear end of the under cover 22 is formed with a bent portion 22b that becomes an upward slope toward the rear, and the tire carrier 26 is disposed at the tip of the upward slope formed by the bent portion 22. Therefore, the traveling wind flowing under the under cover 22 is wound up and rearward at the rear end of the under cover 22 and returned forward by the return portion 26b of the tire carrier 26.

また、アンダーカバー２２に形成された開口ＯＰ１の前縁部２２ｐは下方に突出するため、前縁部２２ｐの後方には負圧が発生する。この結果、タイヤキャリア２６によって返された風は、オイルパン１４ｐの後部および底部を経て開口ＯＰ１から吸い出される。したがって、前方から走行風を取り込みづらい形状の車体であっても、オイルパン１４ｐを積極的に冷却することができる。 Further, since the front edge portion 22p of the opening OP1 formed in the under cover 22 protrudes downward, a negative pressure is generated behind the front edge portion 22p. As a result, the wind returned by the tire carrier 26 is sucked out from the opening OP1 through the rear part and the bottom part of the oil pan 14p. Therefore, the oil pan 14p can be actively cooled even if the vehicle body has a shape in which it is difficult to capture the traveling wind from the front.

さらに、開口ＯＰ１は負圧を形成するための小サイズのものであるため、エンジン音の遮音効果の低減を極力抑えることができる。 Furthermore, since the opening OP1 is of a small size for forming a negative pressure, it is possible to suppress the reduction in the sound insulation effect of the engine sound as much as possible.

１０ …車両
１４ …エンジン
１４ｐ …オイルパン（冷却対象物）
２２ …アンダーカバー（カバー部材）
２２ｐ …前縁部
２２ｂ …曲げ部
２６ …タイヤキャリア（遮蔽部材）
２６ｐ …返し部 10 ... Vehicle 14 ... Engine 14p ... Oil pan (object to be cooled)
22: Under cover (cover member)
22p ... front edge 22b ... bent part 26 ... tire carrier (shielding member)
26p ... Return part

Claims

A cooling object arranged under the floor;
A plate-like cover member that covers the cooling object from below;
An opening having a front edge protruding downward is formed at a position ahead of the object to be cooled in the main surface of the cover member,
At the rear end of the cover member is formed a bent portion that becomes an upward slope toward the rear,
A vehicle further provided with a shielding member that is arranged at a tip of an ascending slope formed by the bent portion and blocks a rear view in front view.