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Throttle trigger actuated throttle position sensor and engine control module

A technology of control module and throttling part, which is applied in engine control, automatic and non-automatic control, machine/engine, etc., and can solve problems such as engine operation and stop

Inactive Publication Date: 2021-08-17
WALBRO LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many of these products have a manually movable throttle lever or trigger remote from the throttle that controls opening and closing of the throttle, and, in close proximity, a kill switch via two terminals and two wire to the ignition control module such that closure of the normally open kill switch causes the ignition module to cease supplying current to the engine's spark plugs, and thus stops operation of the engine

Method used

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  • Throttle trigger actuated throttle position sensor and engine control module
  • Throttle trigger actuated throttle position sensor and engine control module
  • Throttle trigger actuated throttle position sensor and engine control module

Examples

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Embodiment Construction

[0027] figure 1 with figure 2 Illustrated is a handheld power tool or product in the form of a weed string trimmer 20 powered by a small or light duty internal combustion engine 22 . Typically, the engine is a light duty single cylinder two-stroke or four-stroke gasoline powered internal combustion engine. In this engine, a single piston is slidably received for reciprocating movement within the cylinder and is connected by tie rods to a crankshaft 24 which is attached to a flywheel 26 . Typically, the engine has a capacitive discharge ignition (CDI) module 28 for supplying a high voltage ignition pulse to a spark plug 30 to ignite the air and fuel mixture in the engine cylinder combustion chamber. The module alters a top dead center position of a piston relative to and controls spark timing in response to changing engine operating conditions.

[0028] Typically, the engine does not have any batteries that supply current to the spark plugs or a control module that typical...

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PUM

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Abstract

Both the engine kill switch and the throttle lever position sensing switch are remote from the engine and are connected by paired wires to a microcontroller for spark-induced control of the air-fuel mixture in the engine's cylinders. Combustion is controlled. A switch may be received in the same housing and mounted in the operator handle housing of the hand-held power tool.

Description

[0001] References to related applications [0002] This patent application claims the benefit of previously filed US Provisional Patent Application, Serial No. 62 / 259453, filed November 24, 2015, which is incorporated herein by reference in its entirety. technical field [0003] The present disclosure relates generally to internal combustion engines, and more particularly, to a control system with a remote sensor of the throttle position of a carburetor or other device that supplies a mixture of fuel and air to a small engine. Background technique [0004] Small internal combustion engines are used to power a variety of different products such as chainsaws, leaf blowers, lawn mowers, edge trimmers, weed trimmers, and more. Many of these engines are single cylinder two-stroke or four-stroke gasoline powered internal combustion engines having a carburetor or other device with a throttle valve that controls the mixture of fuel and air supplied to the operating engine. Many of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D11/04F02D9/10F02B63/02F02B75/02
CPCF02B63/02F02D11/04F02B75/02F02D9/10F02D9/02F02D41/26F02D2009/0208F02D2009/0294F02D2200/60F02P5/005
Inventor G.M.帕图罗
Owner WALBRO LLC