V-Type Engine Intake Actuator Cooling via Wind Guide
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Solution Overview
Problem
In V-type internal combustion engines, the V-shaped space between banks is prone to hot air accumulation, which can negatively impact the durability of electrically-operated actuators driving throttle valves, and existing solutions fail to adequately address this thermal influence while also ensuring space for auxiliary equipment.
Innovation Solution
The intake system structure positions electrically-operated actuators between cylinder heads of front and rear banks, with a cooling wind guide opening on the front bank to introduce traveling wind into the V-shaped space, enhancing cooling and preventing overheating, while maintaining space for auxiliary equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the electrically-operated actuator is arranged in the V-shaped space between banks, then the space utilization is improved, but the actuator is exposed to hot air accumulation which reduces its durability
Solution Approach 1:
The electrically-operated actuator is extracted from the hot air accumulation zone by positioning it in the cooling air flow path on the front side of the engine, separating it from the harmful thermal environment while maintaining compact arrangement
Solution Approach 2:
Cooling air flow is introduced as an intermediary element between the hot exhaust gases and the actuator, creating a protective thermal barrier that allows the actuator to operate reliably while positioned in the compact V-shaped space
2Device complexity
If the electrically-operated actuator is arranged in the V-shaped space, then the overall engine compactness is improved, but the actuator is thermally influenced by hot air which reduces its reliability
Solution Approach 1:
The cooling air flow is directed specifically to the actuator's location, creating a localized cool zone in the otherwise hot V-shaped space, allowing compact arrangement without thermal damage to the actuator
3Productivity
If auxiliary equipments are arranged in the V-shaped space, then the engine layout efficiency is improved, but the space for actuator arrangement is reduced
Solution Approach 1:
The actuator is positioned in a different spatial dimension (front side cooling air flow path) rather than competing for the same lateral space in the V-shaped area, allowing both auxiliary equipment and actuator to coexist efficiently
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This arrangement effectively reduces the thermal influence on actuators, enhances their durability, and ensures proper intake air control, while allowing for the arrangement of auxiliary equipment, thereby improving the overall cooling and operational reliability of the system.
Implementation Method 1
a cooling wind guide opening on the front bank to introduce traveling wind into the V-shaped space, enhancing cooling and preventing overheating
Data Source
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AI summary
Problem The present invention can arrange electrically-operated actuators for driving throttle valves in a V-shaped space defined between front and rear banks of a V-type internal combustion engine by avoiding the formation of a region into which hot air is liable to easily filled in the V-shaped space thus preventing the overheat of the actuators whereby the durability of the electrically-operated actuators can be enhanced. Further, in spite of the fact that the electrically-operated actuators are arranged in the V-shaped space, it is possible to ensure a storing space for arranging auxiliary equipment or the like in the V-shaped space. Means for Resolution An intake system IN of an internal combustion engine is arranged in a V-shaped space V formed between front and rear banks BF, BR, and the intake system IN includes front and rear throttle bodies 25F, 25R which form front and rear throttle valves 27F, 27R thereon, and electrically-operated actuators AE which drive the throttle valves 27F, 27R. The electrically-operated actuators AE are respectively arranged between cylinder heads 14 of the front and rear banks BF, BR and the front and rear throttle bodies 25F, 25R.