Por que os carros fazem um barulho ao engatar marcha à ré?

[{"selector":"#anim-87f2ad20-8eb9-43a9-93ec-175c9c3daa80","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-1a134194-acdd-41f7-a6ea-6fb9dcccdbd1","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-fe5ff3b2-f6c1-478a-9e46-e3423e3b7643","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-744ccbb9-17f4-406f-9a5a-1d52a06332b4","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Pexels

[{"selector":"#anim-0b045e6f-3f08-42c1-ac66-9b4d7eedfb93","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-a4694d60-d016-4a1a-ab8a-a8f7e2668630","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-9bf3dceb-01db-4bfd-8dc8-78ae5420a1d9","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-5ae257dc-42b3-467e-9e95-85f7caa24b96","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Pessoas com ouvidos mais atentos j á devem ter percebido um ruído diferente ao andar em marcha à ré Pexels

[{"selector":"#anim-38cea454-8092-417b-bf08-34dbe96b0011","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-0021f358-d5fa-4519-b73a-5d6018402a92","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-b3e56229-1d14-4e14-b9ac-484fa5b57e0e","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-72c6dd3a-2ca8-45c9-bf66-b22f445b67f0","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Ao engatar a marcha reversa e acelerar, ouve-se um som agudo Pexels

[{"selector":"#anim-34867dfb-e247-43f7-a2c5-7979e13a37eb","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-95a64d99-e161-42f8-954e-c7caa066273a","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-b4549fc9-dc14-4845-bcb0-badf17acbebe","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-591621b6-6ed0-410d-a3cd-f5c70f516609","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Contudo, esse barulho tem explicação mecânica e é perfeitamente normal Pexels

[{"selector":"#anim-ba2be859-c4af-45c3-9dd8-a3322ba28763","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-0e7ceef4-e2f2-4897-8192-195af283f1c8","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-39ff54a6-5ab3-49e1-9302-1409aee878f3","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-d4667d35-e585-4a29-81fb-9a5b63da257f","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] O formato das engrenagens utilizadas na marcha de reversão dos automóveis é o principal responsável pelo ruído Pexels

[{"selector":"#anim-de78b851-7d98-4029-8638-04615e127fed","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-98ee7ec0-c9fb-423a-9f10-6a506f2d2631","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-e8e78e37-3cb4-4fa8-ab5c-4b67a3a9b23a","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-a3f319b0-1f9f-4870-94c6-a9bae96a01cc","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] “Nas marchas de avanço, são utilizadas engrenagens cilíndricas com dentes helicoidais, cuja principal característica é o contato progressivo entre os dentes” , explica o especialista em mecânica automotiva Daniel Monteiro Pexels

[{"selector":"#anim-44f07227-af65-47e3-aa4f-d0b7eac0dc6a","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-078d0fff-0e4e-4324-ba98-cdf592273ccf","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-aeca8aa5-796d-4243-8ff5-ec889a0e37c2","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-a3e45e2e-f294-42af-a82d-7d347df6073c","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Ele ainda ressalta que este tipo de engrenagem proporciona menor folga , maior suavidade no engate e redução significativa de ruído durante o funcionamento Pexels

[{"selector":"#anim-f819e4df-2d67-48d8-8f35-5a3f2670cf6d","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-19b9bd05-2071-4bf6-b6b9-a502af952a41","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-4cb0556e-f95a-4977-9f50-532094901e6a","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-3ade17fc-e813-44e0-b864-98328bda68f0","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Já na marcha à ré, utilizam-se engrenagens cilíndricas de dentes retos Pexels

[{"selector":"#anim-dc29d60e-6781-4eb0-af19-80474ce37e3a","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-08b07266-6d28-4dc8-a7ba-0b2b0bf7a953","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-5076eacd-1a33-45d0-851a-fd601dbfa717","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-03e22c60-651f-467d-b09d-418461b073c4","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Esse ruído é uma característica das engrenagens e não há nenhuma falha ou problema com o sistema Pexels

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[{"selector":"#anim-153373d6-9baa-44a1-841d-babb77e0809c","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-16592dff-de5d-4479-93dc-4e86e01e9c95","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-589218cd-aa3d-4b66-8705-3bf32ec06a39","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-41a905f2-417b-49fd-a617-1159daa333ee","keyframes":{"transform":["translate3d(0px, 1483.57597%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-1cfe8a8d-ee44-4792-899c-81c0754c0526","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-de82d1ef-7461-4cd4-bd7f-f625e01ce10b","keyframes":{"transform":["translate3d(-117.84387%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-473424ad-c351-4e2f-ae50-9bcddd3d3b36","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-826d7657-fa82-4681-b0d3-7f1c33896c8a","keyframes":{"transform":["translate3d(0px, 870.06218%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] Pexels leia mais em