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Engine start control system and vehicle

A technology of engine starting and control system, which is applied in the direction of engine control, automatic control of electric engine control, engine starting, etc. It can solve the problems such as difficult to achieve engine assistance, and achieve the effect of realizing fuel economy and prolonging driving time

Active Publication Date: 2018-07-27
SUZUKI MOTOR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the engine start control system described in Patent Document 1, the rotational drive of the engine by the starter generator stops at the start of the engine, making it difficult to assist the engine.

Method used

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  • Engine start control system and vehicle
  • Engine start control system and vehicle
  • Engine start control system and vehicle

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Embodiment Construction

[0029] Hereinafter, an engine start control system according to the present embodiment will be described with reference to the drawings. In addition, the engine startup control system of this embodiment is not limited to the following structure, It can change suitably. The engine start control system can be applied to any vehicle, and can be applied to, for example, an automatic two-wheel vehicle, a walk-behind automatic three-wheel vehicle, or an automatic four-wheel vehicle.

[0030] First, refer to figure 1 , the schematic structure of a general engine will be described. figure 1 It is a schematic diagram of the engine of this embodiment. Such as figure 1 As shown, the engine 1 is, for example, a direct-acting DOHC (Double Over Head Camshaft: double overhead camshaft) engine. The engine 1 includes a crankshaft 10 , a cylinder block 11 , a cylinder head 12 , and the like in a crankcase (not shown). Inside the cylinder 11, the piston 13 is housed so as to be able to reci...

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PUM

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Abstract

The invention provides an engine start control system and a vehicle to assist engine driving and improve fuel economy. The engine start control system (3) includes an electric motor (20) that rotates a crankshaft (10), a motor controller (24) that controls the output of the electric motor, and an ECU (2) that controls fuel injection. The electric motor has a first circuit mode and a second circuit mode with different output torques. The motor controller uses the first circuit mode to drive the motor until the engine speed reaches the first speed. When the engine speed exceeds the first speed, the motor controller switches to the second circuit mode to drive the motor until the engine speed exceeds the first speed. The engine speed becomes the second speed which is greater than the first speed. In addition, the ECU starts fuel injection control when the engine speed reaches a third speed that is greater than the first speed and smaller than the second speed.

Description

technical field [0001] The present invention relates to an engine start control system of a vehicle and a vehicle, and more particularly relates to an engine start control system and a vehicle that use an electric motor to assist the start of an engine. Background technique [0002] Conventionally, an engine start control system has been proposed that starts an engine using a starter generator that functions as an electric motor driving the engine and generates electricity using the power of the engine (for example, refer to Patent Document 1). In the engine start control system described in Patent Document 1, the engine is driven to a rotation speed required for engine start by using the driving force of the starter generator. Then, when the rotational speed of the engine increases to a predetermined rotational speed, fuel injection is started to start the engine. [0003] prior art literature [0004] patent documents [0005] Patent Document 1: (Japanese) Unexamined Pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02N11/04F02N11/08F02P5/145F02D43/00
CPCF02N11/04F02N11/08F02P5/045F02P5/145F02N2200/022F02N2300/104F02N11/0814F02D41/00
Inventor 刑部铁也
Owner SUZUKI MOTOR CORP