US 6,655,486 B2 · Engine enclosure for construction vehicles

Abstract

An engine enclosure for a construction vehicle which is simply constructed and small-sized, while improving the cooling efficiency and lowering the noise. The engine enclosure including: an engine hood 15 having an ambient air inlet port 24; and engine side covers 16 having ambient air inlet ports 38. The engine enclosure is constructed to include an ambient air screening wall around a muffler 5 so that the cooling ambient air taken from the ambient air inlet ports 24 and 38 may flow to a fan without contacting with the muffler 5. With this construction, the air around the muffler and especially at a high temperature in the engine room and the cooling ambient air taken from the engine hood and the engine side covers can be screened from each other so that the temperature rise in the cooling ambient air to be fed to a heat exchanger such as a radiator can be reduced to improve the cooling efficiency.

Claims7

Dependent claims

An engine enclosure for cooling an engine of a construction vehicle, in which cooling ambient air taken into an engine room from ambient air inlet port formed in an engine hood enclosing the engine and in two engine side covers in forced by a fan toward a heat exchanger in front of the engine, comprising:

an ambient air screening wall surrounding a muffler, the ambient air screening wall being arranged above the engine in the engine room formed by the engine hood and the two engine side covers, the ambient air screening wall having a three-dimensional duct structure and directing flow of the cooling ambient air into the engine room and toward the fan without any contact with the muffler and engine.

An engine enclosure for cooling an engine of a construction vehicle in which cooling ambient air taken into an engine room from ambient air inlet ports formed in an engine hood enclosing the engine and in two engine side covers is formed by a fan toward a heat exchanger in front of the engine, comprising:

an ambient air screening wall surrounding a muffler, which is disposed in an over-engine space defined in the engine room by the engine hood and the two engine side covers, so that the taken cooling ambient air may flow to the fan without any contact with the muffler;
the ambient air screening wall around the muffler including:
a first muffler screening partition disposed in the engine hood so that the ambient air taken from the ambient air inlet port formed in the engine hood may flow without contacting with the upper face or front face sides of the muffler;
and
second muffler screening partitions disposed in the two engine side covers so that the ambient air taken from the ambient air inlet ports formed in the two engine side covers may flow without contacting with the two sides of the muffler.

2 more elements

Dependencies are inferred from the claim text.

Engine enclosure for construction vehicles

Life of this patent

Engine enclosure for construction vehicles

Life of this patent

Abstract

Claims7