Front structure of vehicle

Abstract

A tunnel-expansion portion is provided at a front portion of a tunnel portion. The tunnel-expansion portion projects upward greatly and widely so as to provide components of an exhaust system that extend rearward from an exhaust manifold therein (outside a vehicle compartment). Accordingly, there can be provided a front structure of a vehicle, in which an engine is laterally disposed in an engineroom at a front portion of the vehicle, an intake pipe is disposed in front of the engine, and an exhaust pipe is disposed in back of the engine, which can improve an exhaust efficiency and a vehiclesafety against a vehicle crash without providing an improperly-large longitudinal space between the engine and the dash panel.

Description

vehicle front structure technical field The present invention relates to the front structure of a vehicle. In particular, it relates to a front structure of a vehicle in which an engine is arranged laterally in an engine room at the front of the vehicle, an intake pipe is arranged in front of the engine, and an exhaust pipe is arranged in the rear of the engine. Background technique Conventionally, a front-engine front-wheel-drive system (hereinafter referred to as FF system) has been frequently used in general vehicles in order to ensure a cabin space as large as possible. In the FF system, since the drive efficiency is excellent when the engine output shaft is arranged parallel to the drive shaft (driveshaft), the engine is generally installed laterally (the cylinders are arranged in the vehicle width direction). In addition, in recent years, in order to reduce exhaust gas emissions, more and more vehicles adopt a rear exhaust layout in which the exhaust pipe is arrang...

AI Technical Summary

Problems solved by technology

Therefore, in the engine of the vehicle described in the above patent document, there is a problem that the exhaust pipe is bent complicatedly, the exhaust efficiency cannot be improved, and the engine output cannot be sufficiently improved.

However, if the space in the front-rear direction between the dash panel and the engine is increased, new problems will arise, such as a significant reduction in the cabin space due to the dash panel being located further back, or a large reduction in the vehicle interior space due to the engine being located further ahead of the vehicle. This will cause the overall weight balance of the vehicle to deteriorate, thereby deteriorating the handling stability.

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