Internal Combustion Engine Without Intake Valves
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Solution Overview
Problem
Internal combustion engines face inefficiencies and increased operating costs due to complex valve timing mechanisms and limited control over air and fuel injection, which restricts their operational range and fuel efficiency.
Innovation Solution
A computer-controlled internal combustion engine system with direct fuel and air injection into the combustion chamber, eliminating the need for intake valves and allowing independent control of air and fuel injection, enabling precise adjustment of combustion parameters for improved efficiency and operational flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If complex valve timing mechanisms are used in internal combustion engines, then control over air and fuel injection is improved, but device complexity increases and mechanical losses increase
Solution Approach 1:
The patent removes the intake valve and valve timing mechanism from the engine system, replacing them with a direct air injection system. The air injector is positioned to deliver air directly into the combustion chamber, eliminating the need for complex valve timing mechanisms while maintaining control over air delivery through electronic injection control.
Solution Approach 2:
The patent replaces the mechanical valve timing system with an electronically controlled air injection system. Instead of using mechanical camshafts and valves to control air intake, the system uses an electronically actuated air injector that can be precisely controlled by a microprocessor, substituting mechanical complexity with electronic control.
2Productivity
If traditional intake valve systems are used, then air delivery to combustion chamber is maintained, but mechanical losses increase and operational range is limited
Solution Approach 1:
The patent implements a dynamic air injection system where the air injector can be controlled independently of engine speed and load conditions. The microprocessor adjusts the air injection timing, duration, and quantity dynamically based on sensor feedback and operating conditions, enabling the engine to operate efficiently across a wider range of RPM and load conditions compared to fixed valve timing systems.
Solution Approach 2:
The system uses sensors to monitor engine conditions and automatically adjusts air injection parameters through the microprocessor without requiring mechanical feedback mechanisms. The electronic control system self-regulates the air-fuel mixture based on actual operating conditions, eliminating the need for mechanical linkages and reducing energy losses.
3Use of energy by moving object
If direct air and fuel injection is implemented, then fuel efficiency is improved and mechanical losses are reduced, but device complexity in control systems increases
Solution Approach 1:
The patent integrates multiple functions into a single electronic control system. The microprocessor controls both air injection timing and fuel injection timing, monitors sensor inputs, and adjusts operating parameters across different engine conditions. This multi-functional electronic controller replaces multiple separate mechanical control systems, reducing overall complexity while improving fuel efficiency through precise coordination of air and fuel delivery.
Solution Approach 2:
The system incorporates sensors that provide real-time feedback to the microprocessor about engine operating conditions. The microprocessor uses this feedback to continuously adjust air and fuel injection parameters, optimizing combustion efficiency. This closed-loop feedback control enables precise fuel management and improved fuel efficiency while using a relatively simple electronic control architecture.
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
The system enhances fuel efficiency, allows operation at higher RPM ranges, and reduces mechanical losses by simplifying the engine design and reducing the number of moving parts, leading to improved performance and lower maintenance costs.
Implementation Method 1
the fuel and oxidizer are injected into the combustion chamber and a combustion reaction produces a pressure increase therein
Implementation Method 2
one or more energy conversion mechanisms configured to convert the increased pressure in the combustion chamber into mechanical energy, such as rotation of the output shaft
Data Source
AI summary
Embodiments disclosed herein relate to internal combustion engines, combustion systems that include such internal combustion engines, and controls for controlling operation of the combustion engine. The internal combustion engine may include one or more mechanisms for injecting fuel, air, fuel-air mixture, or combinations thereof directly into one or more cylinders, and controls may operate or direct operation of such mechanisms.