Vacuum modulator arrangement for an automatic transmission
AssigneeNissan Motor Co., Ltd.
InventorsYoshio Sunohara, Kunio Ohtsuka, Kenichi Sakamoto
Life of this patent
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Abstract
A vacuum modulator arrangement for an automatic transmission of a motor vehicle for use in conjunction with a diesel engine or other fuel-injection engine, includes a vacuum source, a brake booster, a vacuum modulator, a throttle modulator for controlling the automatic transmission, connecting means connected to the vacuum source, the brake booster, the vacuum modulator and the throttle modulator, the connecting means including a passage commonly leading to the vacuum modulator and the throttle modulator, and an orifice placed in the common passage, the orifice having a predetermined effective area.
Claims7
A vacuum modulator arrangement, comprising:
- a vehicular automatic transmission;
- a fuel-injection pump;
- a vacuum source;
- a brake booster;
- a vacuum modulator;
- a throttle modulator for controlling said automatic transmission;
- connecting means for operatively interconnecting said vacuum source, said brake booster, said vacuum modulator and said throttle modulator, said connecting means including a branch portion with a common passage;
- an orifice removably positioned in said common passage, said orifice having a predetermined effective area;
- first and second conduits respectively connecting said vacuum source and said brake booster to said common passage on one side of said orifice;
- third and fourth conduits respectively connecting said vacuum modulator and said throttle modulator to said common passage on the opposite side of said orifice
- whereby said vacuum modulator operates to control the communication between said vacuum source and the atmosphere so that the pressure applied to said throttle modulator can be changed in response to the controlling conditions of said vacuum modulator.
Dependencies are inferred from the claim text.